※聯(lián) 系 電 話:
※傳 真:(傳真 麻煩備注“胡紹洪”收)
※聯(lián) 系 人:胡紹洪 (銷(xiāo)售工程師) ※聯(lián) 系 郵 箱:836478754
一、 壓力開(kāi)關(guān)SOR壓力開(kāi)關(guān)101NN-EE3-N4-C1A-X373
工控備件
1、總部位于德國(guó)杜塞爾多夫-*工業(yè)產(chǎn)品的重要工業(yè)城、德國(guó)工業(yè)的大動(dòng)脈
2、廠家詢價(jià)報(bào)價(jià),享受德國(guó)本國(guó)企業(yè)的價(jià)格折扣,價(jià)格在國(guó)內(nèi)市場(chǎng)上更具優(yōu)勢(shì)!
2、德國(guó)公司集中從相應(yīng)品牌廠家采購(gòu),每周日從德國(guó)總部發(fā)貨!
3、產(chǎn)品可修或換,由我司會(huì)負(fù)責(zé)跟廠家溝通,提供維修檢測(cè)服務(wù)!
4、只要是德國(guó)及歐盟國(guó)家的產(chǎn)品,我們可以為您詢價(jià)并采購(gòu)!
應(yīng)用
防爆差壓開(kāi)關(guān)主要用在冶金、化工、石油、鋼鐵、機(jī)械、制冷設(shè)備、冷凍設(shè)備、水泵的差壓控制、低水位保護(hù)差壓控制、電廠、水泥、食品、船舶等行業(yè)的氣體、蒸氣及水、油等液體壓力設(shè)備和其它工業(yè)設(shè)備執(zhí)行機(jī)構(gòu)配套上,進(jìn)行壓力監(jiān)控、報(bào)警、聯(lián)鎖保護(hù),實(shí)現(xiàn)二位自動(dòng)控制。
1.通用型壓力開(kāi)關(guān) SOR壓力開(kāi)關(guān)101NN-EE3-N4-C1A-X373
2.通用加強(qiáng)型壓力開(kāi)關(guān) 604GZ 604GZ-7011
3.通用專(zhuān)業(yè)型壓力開(kāi)關(guān) 646GZ 646PE
4.通用加強(qiáng)專(zhuān)業(yè)型壓力開(kāi)關(guān) 646GZE 646GZE-7011 6401GZE
5.緊湊型及緊湊加強(qiáng)型壓力開(kāi)關(guān) 6900G 6901G 6900GZ 6901GZ 6900P 6901P
6.緊湊專(zhuān)業(yè)型壓力開(kāi)關(guān) 6900GE 6900PE
7.緊湊加強(qiáng)專(zhuān)業(yè)型壓力開(kāi)關(guān) 6900GZE 6900GZE-7042
8.緊湊型及緊湊專(zhuān)業(yè)型壓力開(kāi)關(guān) 611G 611GE
9.緊湊加強(qiáng)專(zhuān)業(yè)型壓力開(kāi)關(guān) 611GZE
10.微壓型專(zhuān)業(yè)壓力開(kāi)關(guān) 675GE
11.微壓型壓力開(kāi)關(guān)及專(zhuān)業(yè)壓力開(kāi)關(guān) 6810G 6812G 6860G 6862G 6860GE 6862GE
二、差壓開(kāi)關(guān) 美國(guó)CCS壓力開(kāi)關(guān) CCS溫度開(kāi)關(guān)
1.通用型差壓開(kāi)關(guān) 604D 674D
2.通用加強(qiáng)專(zhuān)業(yè)型差壓開(kāi)關(guān) 646DZE
3.緊湊加強(qiáng)專(zhuān)業(yè)型差壓開(kāi)關(guān) 6900DZE
4.通用加強(qiáng)專(zhuān)業(yè)型差壓開(kāi)關(guān) 673DE
5.用專(zhuān)業(yè)型差壓開(kāi)關(guān) 674DE
6.經(jīng)濟(jì)實(shí)用型微差壓開(kāi)關(guān) 1823
7.微差壓專(zhuān)業(yè)型差壓開(kāi)關(guān) 675DE
三、真空開(kāi)關(guān)
1.通用型真空開(kāi)關(guān)
2.通用專(zhuān)業(yè)型真空開(kāi)關(guān) 646VE
3.緊湊型及緊湊專(zhuān)業(yè)型差壓開(kāi)關(guān) 611V 611VE
4.微真空專(zhuān)業(yè)開(kāi)關(guān) 675VE
四、溫度開(kāi)關(guān)
1.通用型溫度開(kāi)關(guān) 604T 604TU
2.通用專(zhuān)業(yè)型溫度開(kāi)關(guān) 646TE 646TUE
3.緊湊型溫度開(kāi)關(guān) 6900T 6900TU
4.緊湊專(zhuān)業(yè)型溫度開(kāi)關(guān) 6900TE 6900TUE
壓力: 2.76KPa~32.41MPa 美國(guó)CCS壓力開(kāi)關(guān) CCS溫度開(kāi)關(guān)
真空: 25.4~723.9mm汞柱
系列: 646GE 646PE 646VE
標(biāo)準(zhǔn)特性:
1. U.L./CSA
2. 專(zhuān)業(yè)等級(jí): DIV.1,2
3. NEMA 4, 7, 9, 13
4. 環(huán)境溫度: -34~71攝氏度6B3-K3-N4-C2A-CLX37 54B3-K118-M4-C2A-CLX373 6NN-K4-V4-F1A 4NN-K4-N4-C1A
9NN-K5-NI-C1A 12N4-K614-W4-C1A-X2 9NN-K5-N4-C1A-X832 44V1-K2-N4-C1A-X832
12L0K45-N4-B1A 4NN-K2-N4-B1A 591P-830A
11V2-EF45-N4-C1A 12NN-N66-N4-B1A 12L-N66-N4-B1A 12NN-N614-N4-B1A
4NN-K4-N4-C1A 9RN-EE45-M4-C1A-X371 201NN-K125-U9-C7A 4RN-EE5-M4-C1A
5NN-KK5-M4-C1A 4NN-K45-N4-C4A-X371 18S-K5-M4-C1A 4NN-EE45-N4-C2A
1RN-K45-M4-C2A-TTX3 107AL-N40-P1-F0A-806 54NN-K118-N4-C2AX3X373
9NN-K5-N4-F1A 6LC-K5-M4-C1A 4NN-K2-N4-B1A 9NN-K45-N4-F1A
103W1-KK502-N4-C1A-TTYY810 103W1-K805-N5-C24 206A-CSB-N-Z1-ET2T-X2-X37144V1-K4-N4-B1A 66V1-K5-N45-B1A 55V1-K3-N4-B1A 55V1-K5-N4-B1A
107AL-K12-P1-F1A 107AL-K40-P1-F1A 4B3-K4-M4-C2A-CLTT 6B3-K5-M5-C2A-CLTT
221A-A1B-B-A4-N4-TT 107AL-N40-P1-F1A-TT
103W1-KK212-N1-C2A-TTYYVVX3X866
12NN-K614-N4-B1A 4NN-K4-N4-C1A-TT 107A1-N12-PI-F1A 6NN-K3-N4-F1A
103W1-KK502-N4-C1A-TTYY810 103W1-K805-N5-C24 206A-CSB-N-Z1-ET2T-X2-X371
17RB-G3-M4-C2A-YY 201NN-K125-U9-C7A-TTYYPKX373 101NN-EE3-N4-C1A-X373
1NN-K45-N1-F1A 534CR-TN51-P9-Z1A-VIRR 6NN-K5-N4-C2A-TT 18RB-K2-N4-B1A-MM
44V1-K5-N4-B1A 55V1-K45-N4-B1A 99V1-K4-N4-B1A 99V1-K5-N4-B1A
44V1-K45-N4-B1A 99V1-K45-N4-B1A 11V1-K45-N4-C1A 66V2-EF2-N4-B1A
12L-K5-N4-B1A 12Nn-K45-N4-B1A 12L0K45-N4-B1A 4NN-K2-N4-B1A
5NN-K45-N4-C1A 9NN-K4-N4-C1A 107EL-EG12P1-F1AX1-TT 1RN-K45-M4-C2A-TTX3
55V2-EF5-N4-B1A 55V-K45-N4-B1A 55V2-EF45-N4-B1A 99V-K4-N4-B1A
9NN-K5-N4-F1A 101LC-K3-M4-C1A 4NN-EE5-N4-C2A
534CR-TN50-P9-Z1A-VIRR 54NN-K118-N4-B1A-X373 6RN-K4-M4-C2A-YYTT-X371
205A-A1B-B-Z1-N4-TT 101NN-EE3-M4-C1A 4NN-K4-M4-C1A-TTX2X371 15RB-K2-N4C1A
107AL-N12-P1-F0A-XD3KPA 1RN-K45-M4-C2A-TTX3 4LC-KK5-M4-C1A-TTLLA7X
107AL-N12-P1-F1A-XO-12INWC
54NN-EE118-N4-C2A 6NN-K45-N4-C1A-X371 4NN-EE4-N4-C2A 6NN-K2-N4-C1A-X371
9NN-K45-N4-F1A 54NN-EE18-M4-C2A 5BA-EB5-M2-C1A-PP 4NN-K5-N4-B1A
4NN-5K-M4-CIA-X 64NN-K3-M4-CB1A-TTXCX373 9NN-KK45-N4-C1A-X373
1RN-K45-M4-C2A-TTX3 107AL-N40-P1-F0A-806 54NN-K118-N4-C2AX3X373
52NN-K116-M4-C1A-PKRRYY55V-K3-N4-B1A 55V2-EF3-N4-B1A 55V-K5-N4-B1A 55V2-EF5-N4-B1A
55V-K45-N4-B1A 55V2-EF45-N4-B1A 99V-K4-N4-B1A 99V2-EF4-N4-B1A
101NN-K3-M4-C1A-TT
107AL-N40-PI-F1A-TTX 6NN-K3-N4-F1A 6NN-K3-N4-F1A 5NN-K5-M4-C2A-TTXX618
12NN-K5-N4-B1A 9NN-K45-N1-F1A 6NN-K5-M4-C2A-TTXX618 9AG-EF45-N1-F1A-XX618
12NN-K2-N4-B1A 12L-K2-N4-B1A 12NN-K4-N4-B1A 12L-K4-N4-B1A
9TA-K5-M7-C2A-TT 66V2-EF5-N4-B1A 55V-K5-N4-B1A 99V2-EF4-N4-B1A
44V1-K2-N4-B1A 66V1-K2-N4-B1A 66V1-K3-N4-B1A 66V1-K5-N4-B1A
54NN-EE118-N4-C1A 54NN-EE118-N4-C1A 9NN-KK45-N1-F1A 9NN-KK45-N1-F1A
208A-EIB-F-Z4-N4-XX373 4NN-EE2-N4-B1A 99VI-K5-N4-C1A 101NN-K3-M4-C1A
4NN-EE4-N4-C1A-X373 4NN-K45-N4-B1A 4NN-K5-N4-B1A 6NN-K5-N4-F1A
12NN-K2-N4-B1A 12NN-K614-N4-B1A 101NN-EE3-M4-C1A-X371 101NN-K3-N4-C1A
66V2-EF2-N4-B1A 66V-K3-N4-B1A 66V2-EF3-N4-B1A 66V-K5-N4-B1A
66V-K45-N4-B1A 66V2-EF45-N4-B1A 55V-K3-N4-B1A 55V2-EF3-N4-B1A
1710A-C2A-C-A4H1-00 107AL-N12-P1-F1A 52RM-KK116-M1-C2A-TTVVYYX373
2NN-K3-S1-C1A-TTX371 103W1-K805-N5-C24 1RN-K45-M4-C2A-TTX3 66V1-K2-N4-B1A
101NN-K3-M4-CIA-TTX371 201NN-K125-U9-C7A-TTYYPKX373 101NN-EE3-N4-C1A-X373
101NN-EE3-N4-C1A-X373 107EL-EG40-P1-F1A-X373 4NN-5K-M4-C1A-X
22RB-K4-N4-B1A 101RN-K3-N4-C1A-TT 4RN-EE5-N4-C1A-X373 15RB-K2-N4C1A
66V-K2-N4-B1A 66V2-EF2-N4-B1A 66V-K3-N4-B1A 66V2-EF3-N4-B1A
66V-K5-N4-B1A 66V2-EF5-N4-B1A 66V-K45-N4-B1A 66V2-EF45-N4-B1A
66V-K2-N4-B1A 66V2-EF5-N4-B1A 55V-K5-N4-B1A 99V2-EF4-N4-B1A
103W1-KK212-N1-C2A-TTYYVVX3X866
66V2-AG3-M4-C2A-TTYYPKX3X866 9B3-KK5-M1-C2A-TTVVYYX373 107AL-K12-P1-F0A
6NN-K3-N4-F1A 5NN-K3-N4-F1A 6L-K5-N4-F1A 519P-165A 5L-K3-N4-F1A
6NN-K5-N4-F1A 12NN-K614-N4 12NN-K6-N4-B1A 74V2-EF118-N4-B1A
4VI-LA4-M4-C1A-YY 534CR-TN51-P9-Z1A-VIRR 519P-75A 54NN-KII8-M4-C2A-TTX373
1NN-EE45-M4-C2A 4NN-IEE5-NE-C2A 54NN-K188-N4-B14-TT 107A1-N40-PI-F1A
6NN-K45-N4-F1A 6L-k45-N4-F1A 5NN-K3-N4-F1A 4NN-K4-M4-B1A
208A-E1B-F-Z1-N4-TTYYVVX 14RN-KK118-M4-CIA-X2 101RN/121RN(101L/121)
107AL-N12-P1-FOA-TT-X371 107AL-N12-P1-F0A-TTXX371 54NN-K118-N4-B1A
107AL-N12-P1-F0A-TTX371 107AL-N12-P1-F0A-TTX371 107AL-N12-P1-F0A-TTXX371
18S-K5-M4-C1A 4NN-EE45-N4-C2A
44V2-EF2-N4-B1A 52RN-K116-M4-C2A-TT 6RN-K3-N4-F1A 4NN-K4-N4-C2A-X804
4NN-K4-N4-B1A 4L-K4-N4-B1A 4NN-K5-N4-B1A 4L-K5-N4-B1A 4NN-K45-N4-B1A
1710A-C2A-C-A4H1-00 107AL-N12-P1-F1A 52RM-KK116-M1-C2A-TTVVYYX373
6RN-E3-N4-M2-F1A 99V1-K45-N4-B1A 11V1-K45-N4-C1A 66V2-EF2-N4-B1A
12NN-K45-M4-C2A-TTX371 60220010
44V2-EF4-N4-B1A 55V2-EF3-N4-B1A 55V2-EF5-N4-B1A 55V2-EF45-N4-B1A
13RB-K5-N4-F1A 44V1-AA45-N4-C1A 15RB-EE2-N4-C2A 6L-A3-N4-CIA-TT
107AL-N12-MNN-P1-F0A-TT-X2-X371 9NN-K45-N4-F1A-X373
5AC-AD45-M2-F1A-X801 107AL-N12-P1-F0A-XD-3pa
44V2-EF4-N4-B1A 1L-K45-N4-F1A 99V2-EF45-N4-B1A 4NN-EE4-N4-O1A-X373
6RN-K45-M4-C2A-YYTT-X371 101RN-K3-N4-C2A-YYTT-X371 6NN-K3N4-F1A
4NN-K4-M4-C1A 44V-K2-N4-B1A 9NN-K45-N4-O2A 52NN-K116-M4-C1A
52RN-EE116-M4-C1A 5NN-EE45-N4-F1A 6NN-K3-N4-F1A 6NN-K45-N4-F1A
101RN-EE3-M4-C1A-TT 18RH-KK2-MI-C2A-TTVVYY 103W1-EE502-N4-C2A-TT
4NN-EE4-N4-C2A 44VI-AA45-M4-C1A 101NN/121NN 14RN-KK118-M4-C1A-X2
9NN-K5-N4-F1A 6LC-K5-M4-C1A 4NN-K2-N4-B1A 9NN-K45-N4-F1A
11V-K45-N4-C1A 12L-K614-N4-B1A 12NN-K5-N4-B1A 4L-K2-N4-B1A
208A-E1B-F-Y4-N4-ETX2X371 205A-A1B-F-B4-N4-ETX2X371 206A-A1B-B-Z1-N4-TT
4NN-EE4-N4-C2A 44VI-AA45-M4-C1A 101NN/121NN 14RN-KK118-M4-C1A-X2
66V-K45-N4-B1A 66V2-EF45-N4-B1A 55V-K3-N4-B1A 55V2-EF3-N4-B1A
6NN-K2-N4-F1A 6L-K2-N4-F1A 6NN-K3-N4-F1A 6L-K3-N4-F1A 6NN-K5-N4-F1A
6NN-K5-M4-C1A-TTX2X371 1NN-KK45-N1-F1A 54NN-K118-N4-B1A-TTX2X371
44V1-K45-N4-B1A 99V1-K45-N4-B1A 11V1-K45-N4-C1A 66V2-EF2-N4-B1A
12L-K5-N4-B1A 12Nn-K45-N4-B1A 591P-830A
9NN-K45-N1-F1A 534CR-TN50-P9-Z1A-VIRR 201NN-K125-U9-C7A-TTYYPKX373
107AL-N40-P1-FOA 107AL-N40-P1-F1A 54NN-K188-N4-B14-TT
54NN-K118-N4-C1A-X804 107AL-N40-P1-F0A-TTX 107AL-K40-P1-F1A-3-401NWC
12NN-K614-N4-B1A 6NN-K3-N4-F1A 12NN-K614-N4-B1A 22RB-K614-N4-B1A
66V2-EF2-N4-B1A 66V-K3-N4-B1A 66V2-EF3-N4-B1A 66V-K5-N4-B1A
5NN-K45-N4-C1A 9NN-K4-N4-C1A 107EL-EG12P1-F1AX1-TT 1RN-K45-M4-C2A-TTX3
54NN-K118-N4-C1A-X804 107AL-N40-P1-F0A-TTX 107AL-K40-P1-F1A-3-401NWC
12NN-K614-N4-B1A 6NN-K3-N4-F1A 12NN-K614-N4-B1A 44V1-K5-N4-B1A 55V1-K45-N4-B1A 99V1-K4-N4-B1A 99V1-K5-N4-B1A
44V-K5-N4-B1A 44V2-EF5-N4-B1A 44V-K45-N4-B1A 44V2-EF45-N4-B1A
9NN-K5-N4-F1A 101LC-K3-M4-C1A 4NN-EE5-N4-C2A 107EL-EG12-P1-F1AX1
44V2-EF5-N4-B1A 99V2-EF4-N4-B1A 99V2-EF5-N4-B1A 99V2-EF45-N4-B1A
208A-E1B-F-Y4-N4-ETX2X371 205A-A1B-F-B4-N4-ETX2X371 206A-A1B-B-Z1-N4-TT
99V-K5-N4-B1A 99V2-EF5-N4-B1A 99V-K45-N4-B1A 99v2-EF45-N4-B1A
44V2-EF2-N4-B1A 52RN-K116-M4-C2A-TT 6RN-K3-N4-F1A 4NN-K4-N4-C2A-X804
54NN-EE5-N4-C2A 4NN-EE45-N4-C2A 4NN-K4-N4-C4A-X371 12NN-YY4-M4-B1AX1
5NN-KK5-M4-C1A 4NN-K45-N4-C4A-X371 6RN-E3-N4-M2-F1A 99V1-K45-N4-B1A 11V1-K45-N4-C1A 66V2-EF2-N4-B1A
47RB-EE2-N4-C2A 107AL-N40-P1-F1A-TT 103W1-KK212-N1-C2A-TTYYVVX3X866 101RN-EE3-N4-CIA-TTX373 12NN-K45-M4-C2A-TTX371
5NN-K5-N4-F1A
6NN-K2-N4-F1A 12NN-K614-N4-B1A 11V-K45-N4-C1A 11V2-EF45-N4-C1A
9LC-KK5-N4-C2A-XX371 12NN-K614-M4-C2A-CS 107AL-N12-P1-F1AX123
44VI-AA45-M4-C1A 18RB-K2-N4-B1A-MM 101RN-KK3-M4-C1A 15RB-EE2-N4-C2A
534CR-TN50-P9-Z1A-VIRR 54NN-K118-N4-B1A-X373 6RN-K4-M4-C2A-YYTT-X371
4NN-EE4-N4-C2A 103W1-K805-N5-C24 206A-CSB-N-Z1-ET2T-X2-X371 6NN-K45-N4-C1A
5L-K5-N4-F1A 5NN-K45-N4-F1A 5L-K45-N4-F1A 9NN-K5-N4-F1A 9L-K4-N4-F1A
9NN-K5-N4-F1A 9L-K5-N4-F1A 9NN-K45-N4-F1A 9L-K45-N4-F1A 6NN-K45-M4-C1A-TTX3X373 6NN-K2-M4-FC1A-TTXCX373
54NN-EE5-N4-C2A 4NN-EE45-N4-C2A 4NN-K4-N4-C4A-X371 12NN-YY4-M4-B1AX1
4NN-5K-M4-CIA-X 64NN-K3-M4-CB1A-TTXCX373 9NN-KK45-N4-C1A-X373
6NN-K2-N4-C1A-X371 5RN-K5-N4-C1A-X371 4NN-K5-N4-C1A-X371 1NN-K45-N4-F1A
5V1-LA45-N4-B1A 9NN-K5-N4-F1A 9L-K4-N4-F1A 5RN-K5-N4-CIA-X371
74V1-K177-N4-B1A 74V1-K178-N4-B1A 74V2-EF117-N4-B1A 4V1-K4-M4
4L-K45-N4-B1A 99V1-K5-N4-B1A 9NN-K5-N4-F1A 4NN-K5-N4-B1A-RR
44V-K4-N4-B1A 99V-K5-N4-B1A 99V2-EF5-N4-B1A 99V-K45-N4-B1A
1NN-K45-N1-F1A 534CR-TN51-P9-Z1A-VIRR 6NN-K5-N4-C2A-TT 18RB-K2-N4-B1A-MM
52RN-K116-M4-C2A-TT 54NN-K118-M4-C2A-TTX37 102W1-K905-N4-C2A-TTX3X866 107EL-EG12-P1-F1AX1
44V2-EF45-N4-B1A 11V2-EF45-N4-C1A 14RN-KK118-M4-C1A-X2 6L-K5-N4-F1A
47RB-EE2-N4-C2A 107AL-N40-P1-F1A-TT 44V-K5-N4-B1A 44V2-EF5-N4-B1A 44V-K45-N4-B1A 44V2-EF45-N4-B1A
44V-K2-N4-B1A 44V2-EF2-N4-B1A 44V-K4-N4-B1A 44V2-EF4-N4-B1A
44V2-EF2-N4-B1A 66V2-EF3-N4-B1A 66V2-EF5-N4-B1A 66V2-EF45-N4-B1A
9AG-EF45-N1-F1A-XX618 44VI-K5-N4-C1A 101RN-KK3-M4-C1A 4VI-LA4-M4-C1A-YY
17RB-G3-M4-C2A-YY 201NN-K125-U9-C7A-TTYYPKX373 101NN-EE3-N4-C1A-X373
6NN-K5 N4-F1A 1RN-K45-M4-C2A 12NN-K5-N4-B1A 12NN-K4-N4-C1A
107AL-N12-P1-F0A 4NN-K5-N4-B1A-TT 6NN-K5-N4-F1A 101NN-K3-N4-CIA-TT
工控備件
1、總部位于德國(guó)杜塞爾多夫-*工業(yè)產(chǎn)品的重要工業(yè)城、德國(guó)工業(yè)的大動(dòng)脈
2、廠家詢價(jià)報(bào)價(jià),享受德國(guó)本國(guó)企業(yè)的價(jià)格折扣,價(jià)格在國(guó)內(nèi)市場(chǎng)上更具優(yōu)勢(shì)!
2、德國(guó)公司集中從相應(yīng)品牌廠家采購(gòu),每周日從德國(guó)總部發(fā)貨!
3、產(chǎn)品可修或換,由我司會(huì)負(fù)責(zé)跟廠家溝通,提供維修檢測(cè)服務(wù)!
4、只要是德國(guó)及歐盟國(guó)家的產(chǎn)品,我們可以為您詢價(jià)并采購(gòu)!
應(yīng)用
防爆差壓開(kāi)關(guān)主要用在冶金、化工、石油、鋼鐵、機(jī)械、制冷設(shè)備、冷凍設(shè)備、水泵的差壓控制、低水位保護(hù)差壓控制、電廠、水泥、食品、船舶等行業(yè)的氣體、蒸氣及水、油等液體壓力設(shè)備和其它工業(yè)設(shè)備執(zhí)行機(jī)構(gòu)配套上,進(jìn)行壓力監(jiān)控、報(bào)警、聯(lián)鎖保護(hù),實(shí)現(xiàn)二位自動(dòng)控制。