化工生產(chǎn)裝置常用英語(yǔ)詞匯對(duì)照[學(xué)習(xí)類(lèi)別]

1、一概論 introduction方案(建議書(shū))proposal可行性研究feasibility study方案設(shè)計(jì)concept design工藝設(shè)計(jì)process design基礎(chǔ)設(shè)計(jì)basic design詳細(xì)設(shè)計(jì)detail design開(kāi)工會(huì)議kick-off meeting審核會(huì)議review meeting外商投資foreign investment中外合資joint venture中外合營(yíng)joint venture補(bǔ)償貿(mào)易compensation trade合同 合同附件contract賣(mài)方vendor買(mǎi)方buyer顧客client承包商contractor工程公司company

2、供應(yīng)范圍scope of supply生產(chǎn)范圍production scope生產(chǎn)能力production capacity項(xiàng)目project界區(qū)battery limit裝置plant公用工程utilities工藝流程圖process flow diagram工藝流程方塊圖process block diagram管道及儀表流程圖piping and instrument drawing物料及熱量平衡圖mass & heat balance diagram蒸汽及冷凝水平衡圖steam & condensate balance diagram設(shè)備布置圖equipment layout設(shè)備表eq

3、uipment list成品(產(chǎn)品)product(final product)副產(chǎn)品by-product原料raw-material設(shè)計(jì)基礎(chǔ)數(shù)據(jù)basic data for design技術(shù)數(shù)據(jù)technical data數(shù)據(jù)表data sheet設(shè)計(jì)文件design document設(shè)計(jì)規(guī)定design regulation現(xiàn)場(chǎng)服務(wù)site service項(xiàng)目變更project change用戶(hù)變更c(diǎn)lient change消耗定額consumption quota技術(shù)轉(zhuǎn)讓technical transfer技術(shù)知識(shí)technical know-howtechnical knowledge

4、技術(shù)保證technical guarantee咨詢(xún)服務(wù)consultative services技術(shù)服務(wù)technical services工作地點(diǎn)location施工現(xiàn)場(chǎng)construction field報(bào)價(jià)quotation標(biāo)書(shū)bidding book公司利潤(rùn)company profit固定價(jià)合同fixed price contract固定單價(jià)合同fixed unit price contract成本加酬金合同cost plus award fee contract定金mobilization銀行保證書(shū)bank guarantee letter保留金retention所得稅income

5、taxes特別承包人稅special contractors taxes城市和市政稅city and municipal taxes工作手冊(cè)work manual工作流程圖work flow diagram質(zhì)量保證程序QA/QC procedures采購(gòu)計(jì)劃procurement plan施工計(jì)劃construction plan施工進(jìn)度construction schedule項(xiàng)目實(shí)施計(jì)劃project execution plan項(xiàng)目協(xié)調(diào)程序project coordination procedure項(xiàng)目總進(jìn)度計(jì)劃project master schedule設(shè)計(jì)網(wǎng)絡(luò)計(jì)劃engineeri

6、ng network logic項(xiàng)目質(zhì)量保證project quality assurance項(xiàng)目質(zhì)量控制project quality control采購(gòu)procurement 采購(gòu)周期procurement period會(huì)簽the squad check計(jì)算書(shū)calculation sheets詢(xún)價(jià)inquiry檢驗(yàn)inspection運(yùn)輸transportation開(kāi)車(chē)start up / commission驗(yàn)收inspection & acceptance校核check審核review審定approve版次version部門(mén)department專(zhuān)業(yè)specialty項(xiàng)目號(hào)projec

7、t number圖號(hào)drawing number目錄contents序言foreword章chapter節(jié)section項(xiàng)itemMRmaterial requisitionSPECengineering specificationDATA SHEET（技術(shù)表）technical data sheetTBA(技術(shù)評(píng)標(biāo)）technical bid analysisPDPpreliminary design packagePM (項(xiàng)目經(jīng)理)project managerLDE(專(zhuān)業(yè)負(fù)責(zé)人)lead discipline engineerMRQ(材料詢(xún)價(jià)單)Material requisition

8、for quotationMRP(材料采購(gòu)單)material requisition for purchaseBEP(基礎(chǔ)工程設(shè)計(jì)包)basic engineering packageP&ID(管道及儀表流程圖)piping and instrument drawing(diagram)PFDprocess flow diagramNNFnormally no flowFOfailure openFCfailure closeC/S/Acivil/structure/architectureDDP（詳細(xì)設(shè)計(jì)階段）detail design phase二. 工藝流程連續(xù)過(guò)程continuous

9、 process間歇過(guò)程batch process工藝敘述process description工藝特點(diǎn)process feature操作operation反應(yīng)reaction副反應(yīng)side reaction絮凝flocculation浮洗flotation傾析decantation催化反應(yīng)catalytical reaction萃取extraction中和neutralization水解hydrolysis過(guò)濾filtration干燥drying還原reduction氧化oxidation氫化hydrogenation分解decomposition離解dissociation合成synthe

10、tics吸收absorption吸附adsorption解吸desorption結(jié)晶crystallization溶解solution調(diào)節(jié)modulate控制control懸浮suspension循環(huán)circulation再生regeneration再活化reactivation瀝取leaching破碎crushing煅燒caloination沉降sedimentation沉淀precipitation氣化gasification冷凍refrigeration固化、結(jié)晶solidification包裝package升華sublimation燃燒combustion引燒ignition蒸餾dis

11、tillation碳化carbonization壓縮compression三、化學(xué)物質(zhì)及特性固體solid液體liquid氣體gas化合物compound混合物mixture粉powder片狀粉未flake小粒granule結(jié)晶crystal乳化物emulsion氧化物oxidizing agent還原劑reducing agent有機(jī)物organic material真空vacuum母液master liquor富液rich liquor貧液lean liquor萃出物extract萃余物raffinate絮凝劑flocculants冷凍鹽水brine酸度acidity濃度concentra

12、tion堿度alkalinity溶解度solubility凝固點(diǎn)solidificalion point沸點(diǎn)boiling point熔點(diǎn)melting point蒸發(fā)率evaporation rate粘度viscosity吸水的water absorbent(a)無(wú)水的anhydrous(a)外觀appearance無(wú)色的colorless(a)透明的transparent(a)半透明的translucent密度density比重specific gravity催化劑catalyst燃燒combustion引燃ignition自然點(diǎn)self-ignition temperature可燃?xì)怏wc

13、ombustible gas可燃液體inflammable liquid易燃液體volatile liquid爆炸混合物explosive mixture爆炸性環(huán)境explosive atmosphere(environment)爆炸極限explosive concentration limit廢水waste water廢液waste liquid廢氣off-gas噪聲noise pollution成分composition撓度deflection力和力矩force and moment彎矩bending moment應(yīng)力-應(yīng)變曲線stress-strain diagram百分比percent

14、age環(huán)境溫度ambient temperature工作溫度operating設(shè)計(jì)溫度design temperature(pressure)相對(duì)濕度RH=relative humidity油渣、淤泥sludge雜質(zhì)impurity四、化工設(shè)備泵pump軸流泵axial flow pump真空泵vacuum pump屏蔽泵canned pump柱塞泵plunger pump渦輪泵turbine pump渦流泵vortex pump離心泵centrifugal pump噴射泵jet pump轉(zhuǎn)子泵rotary pump管道泵inline pump雙作用往復(fù)泵double action recip

15、rocating pump計(jì)量泵metering pump深井泵deep well pump齒輪泵gear pump手搖泵hand(wobble) pump螺桿泵screw (spiral) pump潛水泵submersible pump斜轉(zhuǎn)子泵inclined rotor pump封閉式電磁泵hermetically sealed magnetic drive pump氣升泵air-lift-pump軸承bearing葉輪impeller虹吸管siphon高壓容器high pressure vessel焚化爐incinerator火焰清除器flame arrester工業(yè)爐furnace燒嘴

16、burner鍋爐boiler回轉(zhuǎn)窯rotary kiln加熱器heater電加熱器electric heater冷卻器cooler冷凝器condenser換熱器heat exchanger反應(yīng)器reactor蒸餾釜still攪拌器agitator混合器mixer靜態(tài)混合器static mixers管道混合器line mixers混合槽mixing tanks破碎機(jī)crusher磨碎機(jī)grinder研磨機(jī)pulverizer球磨機(jī)ballmill過(guò)濾器filter分離器separator干燥器drier翅片fins煙囪stack火炬flare篩子screen煅燒窯calciner傾析器decan

17、ter蒸發(fā)器evaporator再沸器reboiler萃取器extractor離心機(jī)centrifuger吸附（收）器adsorber結(jié)晶器crystallizer電解槽electrolyzer電除塵器electric precipitator洗滌器scrubber消石灰器slaker料倉(cāng)bin料斗hopper加料器feeder增稠器thickener澄清器clarifier分級(jí)器classifier浮洗器flocculator廢液池sump噴射器ejector噴頭sprayer成套設(shè)備package unit儀器設(shè)備apparatus附屬設(shè)備accessory旋轉(zhuǎn)式壓縮機(jī)rotary com

18、pressor往復(fù)式壓縮機(jī)reciprocating compressor水環(huán)式壓縮機(jī)nash compressor螺桿式壓縮機(jī)helical screw compressor離心式壓縮機(jī)centrifugal compressor多級(jí)壓縮機(jī)mutiple stages compressor固定床反應(yīng)器fixed bed reactor流化床反應(yīng)器fluidized bed reactor管式反應(yīng)器tubular reactor列管式換熱器tubular heat exchanger螺旋板式換熱器spiral plate heat exchanger萃取塔extraction column板式

19、塔plate column填料塔packed column洗滌塔scrubber吸收塔absorber冷卻塔cooling tower精餾塔fractionating tower汽提塔stripper再生塔regenerator造粒塔prill tower塔附件tower accessories液體分配（布）器liquid distributor填料支持板support plate定距管spacer降液管downcomer升氣管chimney頂(底)層塔盤(pán)top (bottom) tray擋板baffle抽出口draw nozzle溢流堰weir泡罩bubble cap篩板sieve plat

20、e浮閥float valve除沫器demister pad塔裙座skirt橢圓封頭elliptical head高位槽head tank中間槽intermediate tank加料槽feed tank補(bǔ)給槽make-up tank計(jì)量槽measuring tank電解槽cell溜槽chute收集槽collecting tank液滴分離器knockout drum稀釋罐thinning tank緩沖罐surge drum回流罐r(nóng)eflux drum閃蒸罐flash drum浮頂罐floating roof tank內(nèi)浮頂罐covered floating roof tank球罐spheroid氣

21、柜gas holder濕式氣柜wet gas-holder干式氣柜dry gas-holder螺旋式氣柜helical gas-holder星型放料器,旋轉(zhuǎn)閥rotary valve抽濾器mutche filter壓濾器filter press壓濾機(jī)pressure filter板框壓濾器plate-and-fram filter press轉(zhuǎn)鼓過(guò)濾器rotary drum filter帶式過(guò)濾器belt filter翻盤(pán)式過(guò)濾器袋濾器bag filter旋風(fēng)分離器cyclone separator盤(pán)式干燥箱compartment tray drier真空干燥器vacuum drier隧道式干

22、燥器tunnel drier回轉(zhuǎn)干燥器rotary drier穿流循環(huán)干燥器through circulation drier噴霧干燥器spray drier氣流干燥器pneumatic conveyor drier圓盤(pán)式加料器dish feeder螺旋式加料器screw feeder顎式破碎機(jī)jaw crusher回轉(zhuǎn)破碎機(jī)gyratory crusher滾洞破碎機(jī)roll crusher錘式破碎機(jī)hammer crusher沖擊破碎機(jī)rotor impact breaker氣流噴射粉碎機(jī)jet pulverizer棍磨機(jī)rod mill雷蒙機(jī)raymond mill錘磨機(jī)hammer mi

23、ll輥磨機(jī)roller mill振動(dòng)篩vibrating screen回轉(zhuǎn)篩rotary screen風(fēng)機(jī)fan羅茨鼓風(fēng)機(jī)roots blower起重機(jī)crane橋式起重機(jī)bridge crane電動(dòng)葫蘆motor hoist發(fā)電機(jī)generator電動(dòng)機(jī)motor 汽輪機(jī)steam turbine五、管道工程piping engineering1 閥門(mén)valve閥桿stem內(nèi)螺紋閥桿inside screw閥座valve seat (body seat)閥座環(huán)、密封圈sealing ring閥芯(包括密封圈,桿等)trim閥盤(pán)disc閥體body閥蓋bonnet手輪hand wheel手柄h

24、and level (handle)壓蓋gland閘閥gate valve平行雙閘板double disc parallel seat楔形單閘板split wedge截止閥globe valve節(jié)流閥throttle valve針閥needle valve角閥(角式截止閥)angle valveY型閥(截止閥)Y-valve(Y-body globe valve)球閥ball valve三通球閥3-way ball valve蝶閥butterfly valve對(duì)夾式(薄片型)wafer type偏心閥板蝶閥offset disc (eccentric) butterfly valve斜閥盤(pán)蝶閥

25、canted disc butterfly valve連桿式蝶閥link butterfly valve止回式蝶閥combined non-return butterfly valve柱塞閥piston type valve旋塞閥plug valve三通旋塞閥three-way plug valve四通旋塞閥four-way plug valve旋塞cock襯套旋塞sleeve cock隔膜閥diaphragm valve橡膠襯里隔膜閥rubber lined diaphragm valve直通式隔膜閥straight way diaphragm valve夾緊式膠管閥pinch valve止

26、回閥check valve升降式止回閥lift check valve旋啟式止回閥swing check valve落球式止回閥ball check valve彈簧球式止回閥spring ball check valve底閥foot valve切斷式止回閥stop check valve活塞式止回閥piston check valve翻板止回閥flap check valve蝶式止回閥butterfly check valve安全泄氣閥safetySV安全泄放閥relief valveRV安全泄壓閥safety relief valve杠桿重錘式lever and weight type罐底排

27、污閥flush-bottom tank valve波紋管密封閥bellow sealed valve電磁閥solenoid (operated) valve電動(dòng)閥electrically(electric-motor)operated valve氣動(dòng)閥pneumatic operated valve低溫用閥cryogenic service valve蒸汽疏水閥steam trap機(jī)械式疏水閥mechanical trap浮桶式疏水閥open (top) bucket trap浮球式疏水閥float trap倒吊桶式疏水閥inverted bucket trap自由浮球式疏水閥loose fl

28、oat trap恒溫式疏水閥thermostatic trap壓力平衡式恒溫疏水閥balanced pressure thermostatic trap熱動(dòng)力式疏水閥thermodynamic trap脈沖式蒸汽疏水閥impulse steam trap放汽閥(自動(dòng)放汽閥)(automatic) air vent valve換向閥diverting (reversing) valve呼吸閥breather valve減壓閥pressure reducing valve控制閥control valve執(zhí)行機(jī)構(gòu)actuator差壓調(diào)節(jié)閥differential pressure regulatin

29、g valve切斷閥block (shut-off, stop) valve調(diào)節(jié)閥regulating valve快開(kāi)閥quick opening valve快閉閥quick closing valve隔斷閥isolating valve三通閥three way valve夾套閥jacketed valve非旋轉(zhuǎn)式閥non-rotary valve2管子,管件,法蘭管子pipe(按標(biāo)準(zhǔn)制造的配管用管)tube(不按標(biāo)準(zhǔn)規(guī)格制造的其它用管)鋼管steel pipe鑄鐵管cast iron pipe襯里管lined pipe復(fù)合管clad pipe碳鋼管carbon steelC.S.pipe合金

30、鋼管alloy steel pipe不銹鋼管stainless steelS.S.pipe奧氏體不銹鋼管austenitic stainless steel pipe鐵合金鋼管ferritic alloy steel pipe軋制鋼管wrought-steel pipe鍛鐵管wrought-iron pipe無(wú)縫鋼管seamlessSMLS steel pipe焊接鋼管welded steel pipe電阻焊鋼管electric-resistance-welded steel pipe電熔(弧)焊鋼板卷管electric-fusion(arc)-welded steel-plate pipe螺

31、旋焊接鋼管spiral welded steel pipe鍍鋅鋼管galvanized steel pipe排污閥blowdown valve集液排放閥drip valve排液閥drain valve放空閥vent valve卸載閥unloading valve排出閥discharge valve吸入閥suction valve取樣閥sampling valve手動(dòng)閥hand operated(manually-operated) valve(水)龍頭bibb;bib;faucet抽出液閥(小閥)bleed valve旁路閥by-pass valve軟管閥hose valve混合閥mixing

32、 valve破真空閥vacuum breaker沖洗閥flush valve根部閥root (primary, header) valve水煤氣鋼管water-gas steel pipe塑料管plastic pipe玻璃管glass tube橡膠管rubber tube壁厚wall thicknessWT壁厚系列號(hào)schedule numberSCH.NO.加厚的,加強(qiáng)的extra heavy (strong)雙倍加厚的,雙倍加強(qiáng)的double extra heavy (strong)彎頭elbow異徑彎頭reducing elbow長(zhǎng)半徑彎頭long radius elbow短半徑彎頭sh

33、ort radius elbow長(zhǎng)半徑180彎頭long radius return短半徑180彎頭short radius return三通tee異徑三通reducing tee等徑三通straight tee帶支座三通base tee45斜三通45lateralY型三通trueY四通cross異徑管reducer同心異徑管concentric reducer偏心異徑管eccentric reducer管接頭coupling;full coupling活接頭union短管nipple預(yù)制彎管fabricated pipe bendU型彎管Ubend法蘭端flanged end萬(wàn)向接頭univ

34、ersal joint對(duì)焊的butt weldedBW螺紋的threadedTHD承插焊的socket weldedSW法蘭flangeFLG整體管法蘭integral pipe flange鋼管法蘭steel pipe flange螺紋法蘭threaded flange滑套法蘭slip-on flange平焊法蘭slip-on-welding flange承插焊法蘭socket welding flange松套法蘭lap joint flangeLJF對(duì)焊法蘭weld neck flangeWNF法蘭蓋blind flange;blind異徑法蘭reducing flange壓力級(jí)press

35、ure rating(class)突面raised faceRF凸面male face凹面female face全平面;滿(mǎn)平面flat face;full faceFF3.管道特殊件piping speciality粗濾器strainer過(guò)濾器filter臨時(shí)過(guò)濾器temporary strainer(cone type)Y型過(guò)濾器Y-type strainerT型過(guò)濾器T-type strainer永久過(guò)濾器permanent filter洗眼器及淋浴器eye washer and shower視鏡sight glass阻火器flame arrester噴咀;噴頭spray nozzle噴射

36、器ejector取樣冷卻器sample cooler消音器silencer膨脹節(jié)expansion joint波紋膨脹節(jié)bellow補(bǔ)償器compensator軟管接頭hose connectionHC快速接頭quick coupling金屬軟管metal hose橡膠管rubber hose撓性管flexible tube特殊法蘭special flange漏斗funnel8字盲板spectacle (figure 8) blind爆破板rupture disk4,其它材料碳素鋼carbon steel C.S.不銹鋼stainless steelS.S.鑄鐵cast ironC.I.鋁al

37、uminum銅,紫銅copper鈦titanium抗拉強(qiáng)度tensile strength非金屬材料non-metallic material塑料plastic陶瓷ceramic搪瓷porcelain enamel玻璃glass橡膠rubber墊片gasketGSKT平墊片flat gasket填料packing型鋼shaped steel角鋼angle steel槽鋼channel steel工字鋼I-beam寬緣工字鋼或H鋼wide flanged beam扁鋼flat bar圓鋼round steel; rod鋼帶strap steel網(wǎng)絡(luò)鋼板checkered plate材料表bill

38、 of materialBOM材料統(tǒng)計(jì)material take-offMTO散裝材料bulk material綜合管道材料表consolidated piping material summary sheetCPMSS匯總表summary sheet5.設(shè)備布置及管道設(shè)計(jì)中心線center line裝置邊界boundary limitBL區(qū)界area limit設(shè)備布置equipment arrangement (layout);plot plan標(biāo)高,立面elevationEL支撐點(diǎn)point of supportPOS工廠北向plant north方位orientation危險(xiǎn)區(qū)haza

39、rdous area classification凈正吸入壓頭net positive suction head絕對(duì)標(biāo)高absolute elevation坐標(biāo)coordinate管道研究piping study管道布置平面piping arrangement planPAP管道布置piping assembly; layout詳圖detailX視圖view XA-A 剖視section A-A軸測(cè)圖isometric drawing索引圖key plan管道及儀表流程圖piping and instrument diagramP&ID管口表list of nozzles地上管道above g

40、round piping地下管道under ground piping管線號(hào)line number總管header; manifold旁路by pass常開(kāi)normally open常閉normally closed取樣接口sampling connection伴熱管tracing pipe蒸汽伴熱steam tracing熱水伴熱hot-water tracing電伴熱electrical tracing夾套管jacketed line全夾套管full jacketed比例scale圖figure草圖sketch圖例legend符號(hào)symbol件號(hào)part number入口inlet; su

41、ction出口outlet;discharge排出口exhaust排液drain放空vent污水坑sump pit集水池collecting basin溝槽trough管溝piping trench地漏floor drain走道,過(guò)道walk way; gang way預(yù)留區(qū)future area人孔manholeMH手孔handholeHH下水管sewer管口nozzle管口方位nozzle orientation方向direction位置location相交intersection垂直,正交,垂直的perpendicular平行,平行的parallel管頂top of pipe TOP管底

42、bottom of pipe BOP溝底bottom of trench底平flat on bottomFOB頂平flat on topFOT水平的Horizontal垂直的,立式的vertical上升管;垂直管riser等級(jí)分界material specification break隔熱分界insulation break管道等級(jí)piping class管道材料規(guī)定piping material specification公稱(chēng)直徑nominal (pipe) size diameterDN公稱(chēng)壓力nominal pressure(pressure rating)磅/平方英寸pounds pe

43、r square inchPSI公斤/平方厘米kilograms per square centimeterkg/cm2管道附件piping attachment腐蝕余量corrosion allowance管段,短管spool piece ; spool直管run pipe;straight pipe彎管bend管件直連fitting to fitting水平安裝horizontal installation垂直安裝vertical installation對(duì)稱(chēng)的symmetric坡度slope管間距l(xiāng)ine spacing管道跨距l(xiāng)ine span間隙,凈空clearance尺寸dimen

44、sion高度height6.管道支吊架管托shoe管卡clampU型夾(卡)clevis支耳lug預(yù)埋件embedded part鞍座saddle裙座skirt支承架resting support滑動(dòng)架sliding support固定架anchor導(dǎo)向架guide限位架stop吊架hanger彈簧架spring support彈簧托resting type;spring support彈簧吊架spring hanger滾動(dòng)支架rolling support減振器snubber標(biāo)準(zhǔn)管架standard pipe support通用管架typical pipe support懸臂架cantile

45、ver support三角架triangular support支腿leg型管架-type supportL型管架L-type support柱式管架pole type support墻架support-on-wall管墩,低管架sleeper特殊管架special support跨度span伸出長(zhǎng)度(指預(yù)埋螺栓)extrusion熱應(yīng)力分析thermal stress analysis管道柔性分析piping flexibility analysis力矩moment彎曲力矩bending moment扭矩torque荷載load反力reaction位移displacement附加位移appe

46、ndant displacement冷緊,冷拉cold spring固定點(diǎn)fix point; anchor point應(yīng)力stress彎曲應(yīng)力bending stress軸向應(yīng)力axial stress安全系數(shù)safety factor7焊接及熱處理焊接welding電弧焊arc welding電熔焊electric fusion weldingEFW氬弧焊argon-arc welding水壓試驗(yàn)hydraulic testing氣壓試驗(yàn)pneumatic testing8.隔熱隔音及涂漆玻璃棉glass wool巖棉r(nóng)ock wool聚氨脂,聚氨基甲酸脂polyurethane管殼she

47、ll棉氈blanket玻璃布glass (fiber) cloth鍍鋅鐵皮galvanized (sheet) iron;galvenized plain sheet隔熱層insulation保溫hot insulation保冷cold insulation人身保護(hù)personal protection隔音sound insulation吸聲sound-absorbing分貝decibel涂漆painting螺栓bolt自攻螺釘self tapping screw螺母nut墊圈gasket管螺紋pipe thread錐管螺紋taper pipe thread六.自動(dòng)控制測(cè)量measuremen

48、t測(cè)量點(diǎn)measurement point反饋信號(hào)feedback signal范圍range精確度accuracy量程遷移span shift零點(diǎn)遷移zero shift信號(hào)signal模擬信號(hào)analog signal輸出信號(hào)output signal輸入信號(hào)input signal數(shù)字信號(hào)digital signal變送器transmitter檢測(cè)儀表measuring instrument顯示儀表display instrument積算器integrating instrument指示儀表indicating instrument記錄儀表recording instrument盤(pán)裝儀表panel-mounted instrument架裝儀表rack-mounted instrument分散控制儀表distributed control system執(zhí)行器correcting unit執(zhí)