www.467cc.cn-无人在线观看高清电影电视剧,无码少妇一区二区三区免费,午夜福利视频,欧美爆乳乱妇高清免费888

<sup id="a8eos"><samp id="a8eos"></samp></sup>
  • <strike id="a8eos"></strike>
  • <strike id="a8eos"><menu id="a8eos"></menu></strike>
  • <fieldset id="a8eos"><input id="a8eos"></input></fieldset>
  • <fieldset id="a8eos"><input id="a8eos"></input></fieldset>
    產(chǎn)品展廳收藏該商鋪

    您好 登錄 注冊(cè)

    當(dāng)前位置:
    上海思奉貿(mào)易有限公司>>p+f倍加福>>傳感器>>CBN5-F46-E2p+f倍加福傳感器CBN5-F46-E2

    p+f倍加福傳感器CBN5-F46-E2

    返回列表頁(yè)
    • p+f倍加福傳感器CBN5-F46-E2

    收藏
    舉報(bào)
    參考價(jià) 面議
    具體成交價(jià)以合同協(xié)議為準(zhǔn)
    • 型號(hào) CBN5-F46-E2
    • 品牌 倍加福/P+F
    • 廠商性質(zhì) 經(jīng)銷商
    • 所在地 上海市

    在線詢價(jià) 收藏產(chǎn)品 加入對(duì)比

    更新時(shí)間:2018-01-08 10:25:33瀏覽次數(shù):1162

    聯(lián)系我們時(shí)請(qǐng)說明是機(jī)床商務(wù)網(wǎng)上看到的信息,謝謝!

    聯(lián)系方式:售前客服查看聯(lián)系方式

    產(chǎn)品簡(jiǎn)介

    測(cè)量對(duì)象 其他對(duì)象,生物,液位,磁場(chǎng),顏色,電量,聲波,氣體,光線,濕度,速度,重量,位移,張力,壓力,溫度 產(chǎn)地 進(jìn)口
    售后保修期 12個(gè)月 輸出信號(hào) 模擬
    銷售區(qū)域 全國(guó)    
    p+f倍加福傳感器CBN5-F46-E2
    4線直流, 10…30 VDC
    M12 x 1公頭接插件
    EAN 4047101232073
    立方體,邊長(zhǎng)20 mm
    有工作狀態(tài)和開關(guān)狀態(tài)指示燈
    兩路可編程輸出
    之間可選擇開關(guān)點(diǎn)

    詳細(xì)介紹

    上海思奉推薦p+f倍加福傳感器CBN5-F46-E2低價(jià)

    上海思奉貿(mào)易有限公司

    上海市浦東新區(qū)滬南路2218號(hào)BHC中環(huán)中心西樓901

    上海思奉推薦p+f倍加福傳感器CBN5-F46-E2低價(jià)

    上海思奉推薦低價(jià)

     

     

    BIKON-Technik GmbH1015.0-130-180 (145NM)
    KromschroederGEHV 25
    MAN Diesel & Turbo15C-3030 D10.6/1.6x18
    德國(guó)布曼BRINKMANN TH180/760+001
    balluffBES 516-300-S 164-S 4-D
    BERTHOLD TECHNOLOGIES GmbH & Co.KGMultiplier for rod detector P/N:37133
    BOLLFILTER  1300000
    BEFELDSeparation Amplifier 120mV/20mA
    barksdaleGK03 Art-Nr: 0303-031
    ERHARDE110 400VAC 0.22KW 1A
    Aerzener Maschinenfabrik GmbHspare parts : 165069 for GM90S
    MetrelMI2126
    balluffBTL5-E10-M0400-P-S32
    BERTHOLD TECHNOLOGIES GmbH & Co.KG24V filiter,8TE for wall mounted housing and for 19" rack 42855
    Wekal Maschinenbau28500435
    Weitmann & KonradNR: 75780 order-no: 712306/017
    ELCISElcis XYM63-250-5-BZ-C-CL-R
    德國(guó)BAUMER HUEBNERHKD522
    balluffBTL5-F-2814-1S
    ELCIS62CB-1021-1828-BP-B-CH-R
    BERGSSK P40T-1
    BaumerHOG 10 D 1024
    BaumerHOG9D1024
    balluffBOS 25K-5-B5-02
    KSB2%21 400℃ 40MPa WITH 20G ф76×13
    Becker902108 00000
    德國(guó)BAUMER HUEBNERHOG220DN1024CI
    ElsterSPAREPARTSET/100003462
    balluffBTL5-E17-M0200-K-K02
    ThalheimITD 21 B14 Y11 6000H NI D2SR12 E 10 IP65 NR:207586
    balluffBTL5-T110-M0355-B-S103
    B&R8AC120.60-1
    SAMESSIMPLE DISC/D:26 1300763
    balluffBESM12MI-PSC20B-S04G
    KSBBC 25-125/112 CSP
    KSBBaureihe 2000 Bl. 8480.1 DN250 PN10 108 mm,GG / FPM
    VIBRA MASCHINENFABRIK SCHULTHEISDV-E6/330
    KSBPART NO.433;KU022SO-1,Q1Q1X4GG
    ThalheimITD 40 A 4 Y140 1024 H NI VR16 S12 C-Nr:05005584-1
    balluffBTL5-E17-M0450-P-S32
    BERGH-Gr70
    ERHARDCFGO-214D/K84-200 0.55Kw
    balluffBTL6-A-3801-2
    BERTHOLD TECHNOLOGIES GmbH & Co.KGUniprobe LB 490 Level 95-250V HART/ATE,CSA,FM,PI.-Sz.2000 ID:38477—190
    Becker000800 26500
    BACOE80 400 002 L300MM,2
    BACO211 966 021 1610MM250MM315MM
    Chauvin ArnouxCA5260G
    Aerzener Maschinenfabrik GmbHGma 11.3Hv,Typ:Gma 11.3Hv Fabr.Nr 866559 Ault.Nr:60-219939/00 1/min:3600
    Aerzener Maschinenfabrik GmbHOZV-2919 64
    BeckhoffKL2622 Nr:100670
    balluffBTL5-A11-M0250-P-S 32
    德國(guó)Berger LahrWDPM3-314
    balluffBTL-P-1012-4R
    IDEX Corporation84128/5002
    BeckerSV5.330/1-01 2800/3300rpm 310/370m^3/h 240/220mbar with motor:AF90L/2L-12L 3KW
    BERTHOLD TECHNOLOGIES GmbH & Co.KGclamps SPGU 85/25 - 1.4571 for Tower-Sens rod detector (no water jacket) one clamp per module
    KromschroederJSAV40R40-0
    ElsterDG50B-3S 84447240
    Aerzener Maschinenfabrik GmbHspare parts : 122060 for GM90S
    FEMAEx-DGM516(4-16kPa)
    Kromschroeder75421931
    KSBBOAX-B 3G6K6GK-P DN80 NC with a feedback device
    balluffBTL5-E17-M1100-P-S32
    KromschroederTC410-1T,ID-NR.84765810
    benderAGH520SAC0-7200v/50-400HZ;AR:NR.B913033
    balluffBTL5-A11-M1000-P-S 32
    ElsterP578
    BaumerIWFM 14U87/509120 U074
    balluffBMS CS-M-D12-IZ
    BaumerFG40KK-16384G-90G-NG+FG40K-1200G-90G-NG with HK522-12/14
    KSBShaft/PART NO.210;Φ44*513 MM;MATERIAL: ST60/C 45
    balluffBTL5-S172-MO300-P-S32
    balluffBES 516-326-E5-C-S 4
    FEMASN25-280-LED 2.50MPA
    balluffBTL5-E10-M1400-P-S32
    Aerzener Maschinenfabrik GmbHOZV-2919 NU206E 70
    ElsterAKT 25F160GK Order no: 03152344 DN 25,PN16
    BIKON-Technik GmbH1003-035-060
    Chauvin ArnouxCA6505
    KSBPN:234
    ArisN8S;L6-FD;1120D
    BERTHOLD TECHNOLOGIES GmbH & Co.KGPoint Source Isotope Cs-137 Activity: 74 MBq (2 mCi) Classification: ISO/C 66646
    KROMBACHKH1078T G11/4
    AC-MOTORENFCMP280S4 B3/B5  替代型號(hào):W2-280S4 B3/B5
    Jung PolykontaktDTBL 160A 1co
    Aerzener Maschinenfabrik GmbH1ZG-3962 49
    德國(guó)BAUMER HUEBNERHEAG 174ST
    KSBNLT400-500×5S-023
    SAMESSEAL/6.07*1.78 VITON J2FTDF075
    KSB81519379
    德國(guó)BAUMER HUEBNERFGH6KK-2500G-90G-NG-S-J/50P
    MetrelS 2036
    balluffBMF 305K-PS-C-2-S49-00 2
    ThalheimArt.311902 ITD2B105HBXKA1S6 IP65
    Amiad2``Housing ADF Kat-Nr New:DRH1.00002 Kat-Nr Alt:13-8022-2990
    BeckhoffKL1012
    ERHARDG123-815A001
    SAMESSpraymium-sp(Controller+High-voltage generator+Paint Pump)
    B&R8AC112.60-1
    ElsterPFS778L-5/1T/N
    balluffBTL5-E17-M0085-B-S32
    steuteEEX TR 356-11Z,96.0.09.3.02,250V/6A AC 15,230V/0.25A DC 13 IP 67
    balluffBNS 813-D04-D12-100-20-01
    Aerzener Maschinenfabrik GmbHto see picture (Need to set a number of spare parts, please provide the the blower spare parts drawings)
    Atlas CopcoLZB54 AR004-11 375rmp
    KSBETANORM C 100-315 SP Serial:9971387297 000 100 01 Part 00066974
    ArisNL-3040
    Aerzener Maschinenfabrik GmbHOZV-2919 81
    ASV StuebbeFCA 112M-2 4KW 7.69A 2875RPM NO:0860187
    德國(guó)BAUMER HUEBNERPOG10-FSL
    KSB3015K00BH0000 380V 50HZ 32.6A 15KW IP55
    德國(guó)BAUMER HUEBNERHOG10 DN1024I, IP66
    ThalheimA-NR:316072 C-NR:03004347-271
    KSBKIT 2 Bearings Part No. 99‐28.2
    BANSBACHD3D3H52-165-407-170N
    bucherRKVE40 81602348
    ERHARD5605891 11 03 92 PN16/DN250
    benderB911746 W2-A70S
    balluffBTL5-A11-M0150-P-KA05
    BANSBACHA1A1-40-150-400-008 400N
    KSB502.1/502.2 / 997150245500030001
    KromschroederVK 80F10T5A6L3 Order-no. 85317231
    FIBRO-GSA AutomationPiston rod/D 25 F7*149 4659-A-70.7-1
    Elster14130(with CS800)
    德國(guó)Berger LahrTLD012F 0063401200002
    BERTHOLD TECHNOLOGIES GmbH & Co.KGCODICE 09794
    BeckhoffKL3022
    bucherAP100/1,2 D 218
    KSB210 ETANORMG080-250 SP
    Atlas CopcoSERVICE KIT_LSV/LSR/LSF38
    Chauvin ArnouxCA8334
    BIKON-Technik GmbH8000-090
    BIKON-Technik GmbHDOBIKON1012 series set of books 300*375
    德國(guó)BAUMER HUEBNERTDP0.2LT-4
    B&R8V1090.00-2
    balluffBTL5-S172-M0670-B-KA05
    BeckhoffC9900-A140
    ABMHSG9F/D63B-4 I=60:1
    balluffBTL5-E10-M0125-K-SR32
    ABM4DF100LA-4 2.2KW KASER CODE:7.0921.0
    KSBETABLOC GN080-200/3002 G11 Nr:997148155000020001
    BaumerPOG9 D 1024+FSL 700rpm Wellendurchmesser:Ф11 1208011047
    balluffBOS 18KF-NA-1PE-S4-C
    benderSTW2
    BERTHOLD TECHNOLOGIES GmbH & Co.KGMicro-Polar Brix LB 565
    德國(guó)BAUMER HUEBNERencoder H6KK 1024G-90G-NG-J/50P,12-30VDC With Belt overspeed devices EGSK-144PE With coupling ID:415524
    BOLLFILTER  ID:0550003 Typ:4.36.2
    balluffBES G08EE-PSC20B-BV05
    balluffBTL5-T110-M1000-P-S103
    Weitmann & Konrad077782 4206 25 DC24V 50MA
    BaumerHOG220DN1024CI
    balluffBTL5-S172-M0750-P-S32
    KromschroederTC 410-1NZ,order No:84765831
    benderES710/5000
    balluffBNS 819-B03-D12-61-12-10FES80S
    BoehmerBHGV7008.1333,DN20,PN400 31837.00/0001
    BorriesW1201FA-6-C5T10,555500037
    balluffBTL5-C10-M0100-B-S32
    balluffBNS 813-B02-L12-61-A-12-02
    B&R8MSA3L.E0-V4
    BeckerSV 5 1050/1
    ArisNL-0608 230V 50HZ 18VA 8NW 1043-7777401005
    Aerzener Maschinenfabrik GmbHGLA13F7HV SERIAL:981388
    Bihl+WiedemannBWU1345
    KSBBC32-125/302 Nr:997148623700020001
    KSBBOA-H-DN-125-PN16-JL1044
    KromschroederWT 1-FL-839-H175
    德國(guó)BAUMER HUEBNERFGHJ40K 1024-90G/20P
    KromschroederAKT 50F160G Order no: 03152347
    balluffBMS CS-M-D12-ID18-01
    balluffBES M12MI-PSC40B-S04G
    balluffBTL5-E10-M2750-P-S 32
    MetrelHTN 450/30 3/M500 and please see to photo
    KSBpart no.433;type MC N/CN 9/15
    KSB/CPK-CD80-315
    德國(guó)FlowserveType: AW30-N02-2-X2167,C-10000 / FD02,FILTRE DETENDEUR / AIR - EMBOUTS TARAUDES 3/8"
    benderMK2007CBM
    BaumerOG9DN 1000TTL
    德國(guó)Flowserve1/4〞 3021-0006-59 40 08
    ThalheimITD40 A4 Y109
    KromschroederBIO 65HB-0/35-(37)E(150KW)
    KromschroederBVHM 100Z01A /MB 7NW3 Order no:74105880
    MetrelMI 3200
    BOLLFILTER  0550001 4.36.2 0.6-0.8bar
    balluffBTL5-I1-M0175-P-S32
    BeckerVT4.40 909505 00000
    KSB50/7E-031-1068 6-N88-8 844796
    Bihl+WiedemannBWU1746 12422
    Braeuer Systemtechnik2616.200.00
    BoehmerV100.720 (Stahl/ buntmetallfrei, NH3 bestaendig,G 3/4)
    Aerzener Maschinenfabrik GmbHOZV-2919 35
    BaumerK0 POG 9 DN 1024
    Aerzener Maschinenfabrik GmbHART-NR:146433* Polypropylene ethylene plantC801;Mainframe models:VML95
    KromschroederAKT40R50B
    balluffBTL5-E10-M0500-K-SR32,82682
    balluffBTL5-S-171-M0500-B-KA05
    BeckerKVT 3.80
    balluffBOS 25K-5-C90-P-S 4
    balluffBTL5-E17-M0150-K-K02
    balluffBTL5-S177B-M0100-P-KA05
    bucherSRV-AA-6-35
    KromschroederGT50-30T20
    ElsterWT 1-FL-839-H175
    balluffBTL6-A110-M0050-A1-S115
    BeckhoffIE1001
    ArisFIXING DRIVE/WAK 3012 24VA 1200N230V 50(60)HZ
    ElsterDG50V-3 2.5-50BAR
    Amiad81-41-4300-0016
    Aerzener Maschinenfabrik GmbHART-NR:148449* Polypropylene ethylene plantC801;Mainframe models:VML95
    ASV StuebbePRESSUREMAINTAININGVALVE/DHV716;DN15 119043+2x117609
    ArisPD30
    KROMBACHSF320 DN25/PN40 1.4408-1.4571 0.1mm
    balluffBTL5-T110-M0400-P-S103
    BOLLFILTER  134098 Projektname : 6.61 DN100
    BaumerAMP4K-1212+SL3010(gernr10285101 artnr5930z50.055090)
    BeckhoffKL2012
    ERHARDD-89311,DN200,PN16
    德國(guó)布曼BRINKMANN KTF302/410+001
    balluffBES M30MI-PSC15B-BV03
    BaumerOG9DN10UB=+9--30VIP55SER.NR.155616 410HTL
    Aerzener Maschinenfabrik GmbHGLB 15.11HV RA7001 SERIAL:842982
    balluffBTL5-T110-M1110-B-S103
    ADDI-DATA GmbHAPCI-1710
    ArisAFV DN100,PN10
    benderAN450
    BoehmerDNF DN50
    KromschroederPFU 760 LT 220/240VAC
    KSBMotor:DCSKg112-MPE2,7.5KW,2880r/min,no.:V181007,Pump:movitec LHS6-12,ID No.:47110757
    AEP Transducers s.r.l.CTCE825T5
    BeckhoffBK8000
    AC-MOTORENFCM250M4 V1          替代型號(hào):  W2-250M4 B5
    KSBETABLOC,GN.040.125.1/222,G40
    Chauvin ArnouxCA6547
    德國(guó)BAUMER HUEBNERK3511-11
    barksdale0428-017
    KromschroederVG20 R02NT31D
    Atlas CopcoSERVICE KIT_LSF 28
    ABMG90F/4D90SB-4(1.5KW160/1390RPM
    balluffBTL5-E17-M0500-P-S32
    Weitmann & Konrad0789110715 0
    KalinskyDS1-420 0-2.5 mbar
    Weitmann & Konrad202341
    KSB/ETANORM-C125-250DW(Phosphate spray pump Q=190M3/H,H=21M) ;6-912-281083/1
    KSBMovitec VCF 18/8 SN:42/2009/790732-02 TUC/CA/EPDM
    bucherRVSAE3/6DS-112-2-02
    ThalheimITD 41 A 4 Y23 10000 T NI D2SR12 S 20 IP65 50 5VDC
    KSBtype ETANORM-G 50-160 G11
    B&R8V1022.00-2
    KROMBACH3201400050
    ArisTYPE:N3 230V 50/60HZ 7VA 40Nm 90。IP66 120(100)S UT-15/÷60℃ 2ZW 4er/JNO EWK56
    FEMADWR16,Pmax:20bar,Pmax:25bar,ID:0000007042,Pmax:25bar,NG-4347AQ1411,3-16bar
    AmiadAmiad
    德國(guó)Flowserve594110 DN10 PN500
    VIBRA MASCHINENFABRIK SCHULTHEISRVB 0-400-30 30A MAX 400V 50/60HZ
    BaumerHKD522-11/11
    balluffBOS18M-PA-1QB-E5-C-S4
    benderSTW2
    barksdaleGK03 Nr:0303-031
    balluffBES M18MI-PSC80B-BV02
    balluffBES 516-131-S4-C
    bucherCINDY-25-B-SNS-S400-L-G9-1-SVT-250
    KromschroederDG150U-3,3-150mbar,SN:84447500
    balluffBOS18M-PA-1QB-E5-C-S4
    KSBNr:01 049343 part no.433.1;type KU 038 S-M7G49;material:Q1Q1K9GG-G;pump type ETANORM-C 80-250 DW;serial no.4-912-160 436
    BaumerFGH40K HM09M102530
    Remo-hseK-2.2K-12/6K-10M;ART.NO.451 1021;BA 2681,Q05
    KromschroederGIK 250RB100
    FEMADDCM1
    德國(guó)BAUMER HUEBNEROGS 72 DN 1024R;SER.-NR:2042793/9-26V
    BeckhoffZS1000-0640
    BEFELDCOMPACT HOLDER CM-KH-3
    Chauvin ArnouxCA8335 with 3 *A193(800),3*C193 ,3*MN93A,1* 2GB SD Memory Card
    BaumerHOG165 DN2500
    balluffBTL5-F-2814-1S
    BALDOR ASRMDH4A07TR-RP23
    LOOSLevel-probe SER2; R3/4``, L=583, H=500
    BRILEXKA:128595 berst sensor 0040736
    BOLLFILTER  0550001 4.36.2 0.6-0.8bar
    balluffBES 516-300-S 266-S 4
    ZOLLERNM100F3…LCA.8000MM
    BEI IDEACODMHM5-S101G-1213-C100-PRL
    德國(guó)BAUMER HUEBNERPOG9G D 1000R+POG9G DN200I 1607798
    KROMBACHKH1245 RP1/2 PN63 Edelstah
    德國(guó)BAUMER HUEBNERFHDA 04G6102/KS35A
    Atlas CopcoRBU(Silver)
    balluffBKS-S33M-15
    BEI IDEACODPHU920-1312-006 PHU9_20//PSSG//13B12D5//S5R020//U0DA**
    德國(guó)BAUMER HUEBNERPOG 9 DN 1024 I
    BorriesL86/D16-3/K20/W90/R0.1
    BIKON-Technik GmbH550/750-300/510/710-250
    ERHARDM4932891 G02-20/DK 84-200
    BeckhoffKL1002
    KromschroederAKT 15R50B Order no: 03152272
    KromschroederVGBF 100F05-3
    KSB2%21 400℃ 40MPa 20G ф76×13
    Becker90956700000
    balluffBTL5-C10-M2000-P-S32
    ThalheimITD20 B14 Y25 256HNID2SR12E
    balluffBESM12MI-NSC40B-S04G
    KSBV-Ring/PART NO.411;V-25 S;MATERIAL:NBR60
    BERTHOLD TECHNOLOGIES GmbH & Co.KGLB350-1 Moisture measurement unit 230V(Nr:81066-1)
    Elsterjsav100f40-0z
    德國(guó)布曼BRINKMANN 3STA607/750-X+695 IP55 F 7.5KW
    BeckerKV 73.14
    KSBCPK-EF 125-315 Ser.No 3-762-517 399
    ElsterUVS10D0G1
    BeckhoffKL1408
    KSBETABLOC GN40-200/752 KLEMMENKASTENLAGE=OBEN F?RDERH?HE[m]=58 MOTORLEISTUNG[kW]=7,5 SPANNUNG
    KROMBACHDN25 PN40 RV541
    balluffBTL5-E10-M0250-B-S32
    BALDOR ASRDYNAMIC BRAKING UNIT DBU-200
    德國(guó)ALREAFP100(G9040010)
    Aristype WAK 3012; stroke: 300 mm; actuating force: 1.200 N voltage: 230 V 50 Hz; actuating time: 200 sec / stroke protection class IP 54; position witch-off system; 2 additional limit switches adjusting control cam JNS; columns made of 1.410
    德國(guó)布曼BRINKMANN KC60+001
    BOLLFILTER  0550014 4.46.2 0.6-0.8bar
    德國(guó)Flowservetype MW8 FABR NO.225159001 IS(bar)20℃ 500
    AECOSI6.5-DC2 NPN NO
    KSBKIT LINER ISORIA 10/16 DN 400
    ATOSWDKE-0713P
    balluffBES 516-325-G-E5-Y-S 4
    BaumerFGH4KK-2048G-90G-NG-L2-20P+ROC410.3GP2
    ArisK3006;300mm 600N;230V 50HZ
    KROMBACHSF 320S/o,2 ANSL 300 RF
    AC-MOTORENFBPA 132SB-4   替代型號(hào):  ACA-132S4 B5
    KSBAMTRONIC R1142 100101270A00120 76272810/0010 01/08
    Becker008002 26400
    BIKON-Technik GmbH550/750-300/550/750-400
    Aerzener Maschinenfabrik GmbHDN080 SNR:175239000
    SAMESF6RPUK322
    ADDI-DATA GmbHPX901-AG
    Bihl+WiedemannART.412
    ERHARDG761-3004B
    KSBMTC V 50/5B-03.1-10.63
    BoehmerMLG V032.715
    KSBETANORM G150-250 SP Q324 H14 (WITHOUT MOTOR)
    BIKON-Technik GmbH330/560-130/330/560-150
    KromschroederIC40A2AR10,Order No: 74105753
    BoehmerDUN L 025.225,ART-NR.051.7066
    德國(guó)BAUMER HUEBNERK0 POG 9 DN 1024
    BoehmerKNG V025 706-2,DN6,PN25

    收藏該商鋪

    請(qǐng) 登錄 后再收藏

    提示

    您的留言已提交成功!我們將在第一時(shí)間回復(fù)您~

    對(duì)比框

    產(chǎn)品對(duì)比 二維碼 意見反饋

    掃一掃訪問手機(jī)商鋪
    在線留言
    噼里啪啦电影免费观看高清资源| 国产午夜三级一区二区三| 七七久久综合色怡红院| 久久国产欧美日韩精品| 国产美女精品人人做人人爽| 国内精品久久久久久西瓜色吧| 亚洲国产精品原创巨作AV无遮挡| 无码专区―va亚洲v专区在线| 久久精品视频久久| 久久久精品高清一区二区三区|