DCS集散式控制系统 PLC可编程控制器 数控系统 CPU处理器 模块 卡件 控制器 伺服驱动 工作站 驱动器 马达 内存卡 电源 机器人备件等各类工控产品.
优势供应AB，西门子，FANUC，施耐德，ABB，伊顿，霍尼韦尔，GE等进口备件产品——大德汇成-张工 电话18120769972 （微信同号） QQ2265906957（邮箱同号）
6DP1232-8BA.
6DP1230-8CC.
MTS2848-6X-S1U标准机架安装， 1/10G SFP+插槽，48个百兆/千兆电口，固化双冗余电源供电100-240VAC或200-240VDC，标准版软件
KLOCKNER MOELLER DIL 3M80,DIL M 820-XH1 FREE SHIPPING
RECKERMANN TRAVERSA 2015 KLOCKNER MOELLER RELAY SWITCH PART1
KLOCKNER MOELLER PS24-2 USPP PS242
KLOCKNER MOELLER P3-63/V/SVB USPP P363VSVB
KLOCKNER-MOELLER EASY412-AC-RC PROGRAMMABLE RELAY ***XLNT***
KLOCKNER MOELLER N6-63-CNA USPP N663CNA
KLOCKNER MOELLER ZM-32-PKZ2 USPP ZM32PKZ2
KLOCKNER MOELLER ZMR-4-PKZ2 NSFP ZMR4PKZ2
KLOCKNER MOELLER S-PKZ2-400-440V-50/60HZ USPP SPKZ2400440V5060
KLOCKNER MOELLER STZ1.6-480-400 USPP STZ16480400
KLOCKNER MOELLER T3-3-1509/E NSFP T331509E
KLOCKNER MOELLER EBE 221.1 (-1)
KLOCKNER MOELLER PKZ2/ZM-32 THERM MAG MOTOR PROTECT ***NIB***
KLOCKNER MOELLER PKZ2 MANUAL MOTOR STARTER *NIB*
Klockner Moeller Circuit Breaker NZM4-80 _ NZM480 _ NZM4-8O _ NHi11
Klockner-Moeller NZM9-250 With Trip ZM9-250-CNA Circuit Breaker Free Shipping
Klockner Moeller PC Circuit Board, EBE221.1 Warranty
Klockner Moeller CONTACTOR * DIL00M-10 / DIL00M10 220V 50HZ - 240V 60HZ (061216)
1 LOT OF 5 ASSEMBLED KLOCKNER MOELLER OVERLOADS (O1)
RK ELECTRONICS KLOCKNER MOELLER (ZVM-600R) ZERO SPEED SWITCH NEWinBOX !!
KLOCKNER MOELLER P3-63/EA/SVB USPP P363EASVB
Klockner Moeller DIL M1 15 With ZB150-100 Motor Starter
KLOCKNER MOELLER DILR-22-G24VDC NSFP DILR22G24VDC
KLOCKNER MOELLER PKZM3-10 NSFP PKZM310
KLOCKNER MOELLER UV-NZM-220/380/500V USPP UVNZM220380500V
KLOCKNER MOELLER DILM-40-230V/50HZ/240V/60HZ NSFP DILM40230V50HZ24
KLOCKNER MOELLER PKZM3-1.6-0.8/1.6-NA NSFP PKZM3160816NA
KLOCKNER MOELLER PKZM31NA NSFP PKZM31NA
KLOCKNER MOELLER T3-1-102/Z-UV NSFP T31102ZUV
KLOCKNER MOELLER P1-25/I2/SVB/HI11-NA NSFP P125I2SVBHI11NA
KLOCKNER MOELLER T0-4-15682/I1/SVB-SW NSFP T0415682I1SVBSW
KLOCKNER MOELLER T5B-1-8200/I/SV NSFP T5B18200ISV
KLOCKNER MOELLER DIL0AM-110V-50HZ-120V-60HZ NSPP DIL0AM110V50HZ12
KLOCKNER MOELLER PKZM0-6.3/SE00-11-110V/50HZ-120V/60HZ USPP PKZM063SE001124V
KLOCKNER MOELLER PKZ2/ZM-32 USPP PKZ2ZM32
KLOCKNER MOELLER TPD11DIL *NEW IN A BOX*
KLOCKNER-MOELLER NZM9-250 225 HP 250A 250 A AMP BREAKER
Klockner Moeller PKZ2 ELB1 Motor Protect. w/ZM-32-PKZ2
NEW KLOCKNER MOELLER FVNR NON-COMBINATION STARTER DIL00M IMPERVITRAN B05008928
KLOCKNER MOELLER DILM32-10-600V-60HZ NSFP DILM3210600V60HZ
KLOCKNER MOELLER P1-32/I2/SVB-SW-NA NSFP P132I2SVBSWNA
KLOCKNER MOELLER S-201 USPP S201
KLOCKNER MOELLER ZMR0.6-PKZ2 NSFP ZMR06PKZ2
KLOCKNER MOELLER P3-63/I/SVB/HT11 P DISCONNECT SWITCH
KLOCKNER MOELLER T4A-5-67/3196/E-NA NSFP T4A5673196ENA
KLOCKNER MOELLER EASY412-DC-RCX NSFP EASY412DCRCX
KLOCKNER MOELLER DIL0AM-230V-50/60HZ USPP DIL0AM230V5060HZ
KLOCKNER MOELLER DIL0M-G-24VDC USPP DIL0MG24VDC
KLOCKNER MOELLER T4A-4-3/E/NA NSFP T4A43ENA
KLOCKNER MOELLER DIL00A-M-G-10-24VDC NSPP DIL00AMG1024VDC
KLOCKNER MOELLER IFM-485.1 NSFP IFM4851
KLOCKNER MOELLER PKZM3-25-U-NA USPP PKZM325UNA
KLOCKNER MOELLER SM2-EPR4 NSPP SM2EPR4
KLOCKNER MOELLER ZM-25-PKZ2 USPP ZM25PKZ2
KLOCKNER MOELLER ZB4-209-DS2 NSFP ZB4209DS2
Klockner Moeller Easy Relay PLC - I/O
Klockner Moeller Easy Relay PLC
Klockner Moeller Contactor DIL M300 AC or DC 110 or 250V Coil 125 HP @ 230V
Klockner Moeller Disconnect Switch NZM9-250 With Shunt Trip
Klockner Moeller Front-Mounted Plug S201
DIL0M-G Klockner Moeller Motor Contactor
KLOCKNER MOELLER CI-G-135/T3-4-8440/Z NSPP CIG135T348440Z
KLOCKNER MOELLER EMT6 NSFP EMT6
KLOCKNER MOELLER FAZ-D3/2-RT USPP FAZD32RT
KLOCKNER MOELLER T3-3-8228/E NSFP T338228E
KLOCKNER MOELLER DILR22-G240VDC NSPP DILR22G240VDC
KLOCKNER MOELLER DILR40-G-24VDC NSPP DILR40G24VDC
KLOCKNER MOELLER T5B-4-15164 USPP T5B415164
3004 New-No Box, Klockner Moeller ZM-6-PKZ2 Motor Trip Module
3008 New In Box, Klockner Moeller ZM-6-PKZ2 Motor Trip Module
KLOCKNER MOELLER DIGITAL EXPANSION MODULE PLC 16OUT LE4-116-XD1 24VDC 6mA
KLOCKNER-MOELLER EBE-211 TIMER MODULE 8 CHANNEL
Klockner-Moeller DILOAM/22 Universal Contactor - New
KLOCKNER MOELLER PKZM3-10 NSPP PKZM310
KLOCKNER MOELLER CS3 NSFP CS3
KLOCKNER MOELLER DILR22-115VAC USPP DILR22115VAC
KLOCKNER MOELLER BOB-200 USPP BOB200
KLOCKNER MOELLER DILM65-190V/50HZ-220V/60HZ USPP DILM65190V50HZ22
KLOCKNER MOELLER CDN-17 USPP CDN17
KLOCKNER MOELLER SIM1-PS3 NSPP SIM1PS3
Klockner Moeller Front-Mounted Plug S201
KLOCKNER MOELLER PKZM0-2.5/SE00-11-110/120V NSPP PKZM025SE0011110
KLOCKNER MOELLER DILR-22-G24VDC NSPP DILR22G24VDC
Klockner Moeller Contactor DIL1M-G
KLOCKNER MOELLER EASY719-DCRCX NSFP EASY719DCRCX
KLOCKNER MOELLER SM2-P32 USPP SM2P32
KLOCKNER MOELLER S-252 USPP S252
KLOCKNER MOELLER S253 USPP S253
KLOCKNER MOELLER T3-1-102/Z+UV+FS907 USPP T31102ZUVFS907
KLOCKNER MOELLER DIL-00-52/Z0-37-240V/60HZ NSPP DIL0052Z037240V6
KLOCKNER MOELLER P3-63/Z USPP P363Z
KLOCKNER MOELLER DIL-2-AM-230V-50/60HZ USPP DIL2AM230V5060HZ
KLOCKNER MOELLER T0-4-15682/I1/SVB-SW NSPP T0415682I1SVBSW
KLOCKNER MOELLER K95/4 USPP K954
KLOCKNER MOELLER FAZ-D10/2-RT USPP FAZD102RT
Klockner-Moeller Enclosed START STOP PKZM-3-25-U-NA
KLOCKNER MOELLER NZM7-100 Circuit Breakers NZM7100 DAVO-NZM7
KLOCKNER MOELLER TO-2-6490-65/I/SVB *NEW IN A BOX*
KLOCKNER MOELLER P1-32/I2/SVB-NA *NEW*
KLOCKNER-MOELLER NZM8-200 CIRCUIT BREAKER + ZM8
AS-IS see the description
KLOCKNER-MOELLER N6-63-CNA
Klockner-Moeller EBE211 ADJUSTABLE TIMER MODULE for industry use
Klockner Moeller DIL0M Contactor 15hp 120v 35a NEW DIL M 22
Klockner Moeller DIL00M4-G Contactor 20a Coil 24VDC DILOOM4-G starter relay NEW
KLOCKNER MOELLER P3-63/I4/SVB-NA *NEW*
KLOCKNER MOELLER PKZ2/ZM-32 *NEW*
KLOCKNER MOELLER Z5-100/FF250 Therm. Overload Relay NEW
KLOCKNER-MOELLER DIL0AMG CONTACTOR 24V DC DIL OA M-G
KLOCKNER MOELLER CONTACTOR CAT#DIL4-22-NA 115V COIL
KLOCKNER-MOELLER PKZM3-1-NA 550/600V 40HP 0.5-0.9A MANUAL MOTOR STARTER
KLOCKNER-MOELLER PROGRAMMABLE RELAY MODULE MODEL 412-AC-R
KLOCKNER MOELLER MOTOR TRIP CURRENT LIMITER
KLOCKNER-MOELLER CONTACTOR CAT#DILR22D 120VCOIL 600V 15A
KLOCKNER MOELLER NZM 4-80 FREE SHIPPING
NEW Moeller PKZ Motor Protective Circuit Breaker Manual 50A Klockner PKZM4-50
NEW MOELLER KLOCKNER ELECTRIC DIL-0AM CONTACTOR 115V 60HZ
KLOCKNER MOELLER PKZ2 USPP PKZ2
KLOCKNER MOELLER ETR5-1 NSFP ETR51
KLOCKNER MOELLER ETS-A4-2 NSFP ETSA42
KLOCKNER MOELLER LE4-116-DX1 USPP LE4116DX1
KLOCKNER MOELLER A600-NZM10 NSPP A600NZM10
Klockner Moeller DIL4-22-NA Contactor 300 amp 600vac DIL422NA Free Shipping
Klockner Moeller 11S DIL M 11SDILM Contactor
KLOCKNER MOELLER U-NZM7-24VAC USPP UNZM724VAC
KLOCKNER MOELLER PKZM0-1.6/NHI11 NSFP PKZM016NHI11
KLOCKNER MOELLER DIL0M-110V/50HZ-120V/60HZ USPP DIL0M110V50HZ120
KLOCKNER MOELLER SM2-R8 USPP SM2R8
KLOCKNER MOELLER T1-9-15147/EZ-NA NSPP T1915147EZNA
KLOCKNER MOELLER MOTOR PROTECTION TRIP BLOCK ZM-40-PKZ2 *NEW OUT OF BOX*
KLOCKNER MOELLER PKZM3-1-NA *NEW IN A BOX*
Klockner Moeller Front-Mounted Plug S252
KLOCKNER MOELLER DILM-50-230V/50/60HZ USPP DILM50230V5060HZ
KLOCKNER MOELLER PKZM0-1.6-NA NSFP PKZM016NA
KLOCKNER MOELLER PKZM3-10 USPP PKZM310
KLOCKNER MOELLER EASY412-AC-RC USPP EASY412ACRC
KLOCKNER MOELLER PKZM3-0.6-U-NA USPP PKZM306UNA
KLOCKNER MOELLER PKZM3-16-U-NA USPP PKZM316UNA
KLOCKNER MOELLER T3-1-102/Z-UV USPP T31102ZUV
KLOCKNER MOELLER NHINZM10 NSFP NHINZM10
Klockner Moeller Thermal Trip Circuit Breaker 100A NZM
Model NZM6B100 Switch Disconnect Motor Protector 100A
KLOCKNER MOELLER DIL-0AM-G-24VDC NSFP DIL0AMG24VDC
Klockner Moeller DIL0AM Contactor + 31DILM Auxilary
KLOCKNER-MOELLER N6-160-CNA 150 AMP DISCONNECT SWITCH
New Klockner Moeller Relay Output Unit ETS 1-10 ETS1-10
LOT OF 7 KLOCKNER MOELLER 04DILE *NEW*
# KLOCKNER MOELLER 50 AMP NZM6B-63/ZM6A-50 600 V BREAKER W / HANDLE
KLOCKNER MOELLER PKZM0-25 NSPP PKZM02
KLOCKNER MOELLER CONTACTOR DIL1AM 110/120V NIB DIL 1AM
KLOCKNER MOELLER PKZM3-25-U-NA CONTACTOR ***XLNT***
KLOCKNER MOELLER DILR22-G240VDC USPP DILR22G240VDC
KLOCKNER MOELLER DILR40-G-24VDC USPP DILR40G24VDC
KLOCKNER MOELLER DIL-00-52/Z0-37-240V/60HZ USPP DIL0052Z037240V6
KLOCKNER MOELLER DILR40-G/22 *NEW*
KLOCKNER MOELLER EBE250A-1 NSPP EBE250A1
KLOCKNER MOELLER PKZM0 USPP PKZM0
KLOCKNER MOELLER Z1-63 USPP Z163
KLOCKNER MOELLER DIL-1-AM USPP DIL1AM
KLOCKNER MOELLER EBE-206.1-2 USPP EBE20612
KLOCKNER MOELLER EBE-206.2-2 USPP EBE20622
KLOCKNER MOELLER PS416-INP-400 NSFP PS416INP400
KLOCKNER MOELLER A600-NZM10 USPP A600NZM10
KLOCKNER MOELLER PKZ02-1.6/CIS-NA NSPP PKZ0216CISNA
KLOCKNER MOELLER PKZ02-2.4-NA NSPP PKZ0224NA
KLOCKNER MOELLER PKZM0-16-T NSPP PKZM016T
N6-160-CNA KLOCKNER-MOLLER DISCONNECT SWITCH 125 AMP
KLOCKNER MOELLER DILR-22-G24VDC USPP DILR22G24VDC
KLOCKNER MOELLER N64-125-VDE NSFP N64125VDE
KLOCKNER MOELLER P1-32/I2/SVB NSPP P132I2SVB
Lot of 3 - New Klockner Moeller Z00-4 Overload Relay w/ EZ00 Mounting Base
KLOCKNER-MOELLER N6-160-CNA 125 AMP DISCONNECT SWITCH
KLOCKNER MOELLER P2-30/F-CNA DOOR SWITCH CONTACTOR CNC
KLOCKNER MOELLER DISCONNECT SWITCH N6-63-CNA N663CNA BREAKER ZIMMERMAN FZ10-2
KLOCKNER MOELLER PKZ02-1.6-NA NSFP PKZ0216NA
KLOCKNER MOELLER PKZ02-6.0-NA NSFP PKZ0260NA
KLOCKNER MOELLER PKZM0-2.5/CI-PKZ0-G/NHI11-PKZ0/L-PKZ0-RT-400V NSFP PKZM025CIPKZ
KLOCKNER MOELLER DIL0M-230V-50/60HZ NSFP DIL0M230V5060HZ
KLOCKNER MOELLER PKZ2/ZM-01.6 USPP PKZ2ZM016
KLOCKNER MOELLER PKZM3-32-U-NA USPP PKZM332UNA
KLOCKNER-MOELLER PKZM3-10-NA 575V 7.5HP 5.5-9.5A MANUAL MOTOR STARTER
KLOCKNER MOELLER PKZM-3-10-U-NA NSPP PKZM310UNA
KLOCKNER MOELLER DIL00AM-G-10-DC24 USPP DIL00AMG10DC24
KLOCKNER MOELLER STK0.75-220-115 USPP STK075220115
KLOCKNER MOELLER 61-00114-001 USPP 6100114001
KLOCKNER MOELLER STZ-0.8-220-115 USPP STZ08220115
KLOCKNER MOELLER NZM6-100/ZM6A-40-NA USPP NZM6100ZM6A40NA
Moeller Klockner PKZ2 PKZ 2 ZM-10 motor starter *NEW*
Moeller Klockner PKZ2 PKZ 2 ZM-4 motor starter *NEW*
KLOCKNER MOELLER N6-63-CNA SWITCH DISCONNECTOR 63A 600V
KLOCKNER MOELLER DIL0M 240V *NEW IN A BOX*
KLOCKNER MOELLER STORE MODULE EE1-PS306 EE1PS306
KLOCKNER MOELLER DIL 3-22-NA 120A 110V COIL CONTACTOR
Klockner Moeller Input PS416-INP-400 (3200)B
Klockner Moeller PKZ2 Motor Protector w/ZM-16-PKZ2.
T0-3-15680/V/SVB Klockner Moeller New In Box Cam Switch T0315680VSVB
Klockner Moeller: DIL1A M AC Contactor / Starter
KLOCKNER MOELLER EMT-5 USPP EMT5
KLOCKNER MOELLER P3-63 DISCONNECT SWITCH UNIT 63A ***NNB***
Klockner Moeller PS4 I/O Module LE4-116-DX1 LE4116DX1
Jackson Transformer p/n D32G 13,400 Kva 150 KHZ , 20,000 Volts Ratio 13:1
JAGUAR VXSM220-1 USPP VXSM2201
JAKOB HATTELAND JH-1504-MXV USPP JH1504MXV
JAKOB HATTELAND JH-1702-MXP USPP JH1702MXP
Jamesbury 3 9150LA313600XTZ2 Full Port Ball Valve 3" ( ) CIP
Jamesbury 815L113600XZ 3" Wafer-Sphere Valve Mod. C 316SS
Jamesbury 815W-11-2236TTC Spring Return Actuator Butterfly Valve
Jamesbury 815W-11-3600-XZ Wafer-Sphere Valve 3" (NNB) CIP
JAMESBURY 815W113600XZ WAFER-SPHERE VALVE 3" W/ VPVL350 SR4/5 B C ACTUATOR
Jamesbury 815W-11-3600-XZ Wafer-Sphere Valve 4" (NNB) CIP SS
Jamesbury 815W-11-3600-XZ Wafer-Sphere Valve 6" ( ) CIP SS
Jamesbury 815W-11-3600-XZ Wafer-Sphere Valve 6" (NNB, No Handle) CIP SS
Jamesbury 815W-11-3600-XZ-QY Wafer-Sphere Valve 3" ( ) CIP
Jamesbury 830W-ET001-3600-XZ Wafer-Sphere Valve 4" (NNB) CIP 316SS
Jamesbury 830W-ET001-3600-XZ Wafer-Sphere Valve 4" (NNB) CIP SS
Jamesbury Neles QP5B/34 Quadra Power II Spring-Diaphragm Actuators NC 40-100PSI
Jamesbury VPVL500 SR4/5 B C Air Operated 3 way ball valve (NNB) 3" CIP Stainless
Jamesbury VPVL650-SR4/5 Spring Return Actuator Valve 499 PSI
JANCD-CP04 Yaskawa LX1 SERVO CPU MOTHERBOAR TESTED
JANCD-FC200-1 Yaskawa Yasnac i80 SYSTEM
JANCD-FC200-1 Yaskawa Yasnac i80 SYSTEM CONTROL, tested
JANCD-FC200-1 Yaskawa Yasnac PCB SYSTEM CONTROL, tested
JANCD-MB22 Yaskawa YASNAC Main board
JANCD-MB22 Yaskawa YASNAC Main board, tested
JAPAN RADIO NJZ-2000/GSM WCDMA Mobile Phone Tester
Japan Radio Company Bridge Navigational Watch Alarm Systems - BNWAS
Japan Radio Company JRC NJZ-4000 Application Tester
JAPAN RADIO COMPANY JRC NJZ-4000 APPLICATION TESTER w/ OPTIONS W06 A00
JAPAN RADIO COMPANY JRC NJZ-4000 APPLICATION TESTER w/ OPTIONS W06 A00 A10
Japan Radio Company NJZ-1800BJ CDMA Mobile Phone Tester
Japan Radio Company NJZ-2000 with options G00/G03/W00/W07/E00/E01/E03/E04
Japan Radio Company NJZ-2000 with options G00/W00/E00/E01/
Japnese Yokagawa AQ1200 SM OTDR 32/30dB,1310/1550nm, by Fedex
JASON D4578-14M-115 NSPP D457814M115
JBI Wire-O Punch ａnd Closer PC/12 Series 700
JD63T400
JDC2225 Thermal Magnetic Circuit Breakers Eaton / Cutler- Hammer
JDP320100 JOSLYN CLARK DANAHER CONTROLS JDP3 20100
JDP421100 JOSLYN CLARK DANAHER CONTROLS JDP4 21100
JDS 4x48 SG0448-Z000344 Programmable Matrix Switch JDSU
JDS Fitel - SC Series Fiber Optic Switch p/n SC10B5-E1SU - CD26
JDS FITEL Backreflection Meter RM3000A
JDS Fitel Broadband Noise Source BNS1415
JDS FITEL HA9 OPTICAL ATTENUATOR (good condition)
JDS Fitel HA9 Optical Attenuator P/N HA9503-FAS2
JDS FITEL HA9503 FAS2 HA9 Optical Attenuator
JDS FITEL PS3050 Polarization Dependent Loss Multimeters
JDS Fitel RM3000B
JDS Fitel RM3750B ( RM3750B+Z0001 ) Backreflect Meter
JDS FITEL RX3030-1041FA2 USPP RX30301041FA2
JDS FITEL RX3152-5G USPP RX31525G
JDS FITEL SA22-Z000054 SERIES FIBER OPTIC SWITCH
JDS FITEL SAZ412 SC SERIES FIBER OPTIC SWITCH
JDS FITEL SA-Z530 SA SERIES FIBER OPTIC SWITCH
JDS FITEL SB04-4B5-D2FP SB SERIES FIBER OPTIC SWITCH 2(1X2)
JDS FITEL SB04B5-C2FP SB SERIES FIBER OPTIC SWITCH 1X4
JDS FITEL SB05B5-C2FA SB SERIES FIBER OPTIC SWITCH 1X5
JDS FITEL SC24B5-E2FP SC SERIES FIBER OPTIC SWITCH 1X24
JDS Fitel SG Series Fiber Optic Matrix Switch SG16162+11M000FP
JDS Fitel SG12042+12M000FP Fiber Optic Matrix Switch
JDS FITEL TB2500-EC TUNABLE ETALON CONTROLLER
JDS Fitel Uniphase PR2000 Precision Polarization Polarizer Controller
JDS HA11 - HA117+20ASC1
JDS MTA150 Attenuator mainframe W/8 X MTA300 LIKE HA9
JDS OAB1554
JDS OPM161-Z1315 Multi Channel Power Meters
SQUARE D IL34350 USPP IL34350
JDL36200 Square D Circuit Breaker NEW 200A 3P JDF36200
Square D MAL361000 1000A Thermal Circuit Breaker
SQUARE D LH-36300 LH36300 D 5C 821 3POLE 300A 300 A AMP CIRCUIT BREAKER
New Square-D HU363AWKEI Nonf 100A Safety Switch
Square D S33931 Plug-In Lugs, 1200 Amp, I-Line, NEW
Square D Circuit Breaker MAL36700 MAL367OO 700 A
SQUARE D EJB34090 90 AMP CIRCUIT BREAKER
Square D I Line Circuit Breaker 125A-600V # KA36125
NEW SQUARE D JDF JDF36175 3 POLE 175 AMP 600V BREAKER
Telemecanique ATV58HU72N4Z Square D Altivar 58 AC Drive 5 HP
SQUARE D MOLDED CASE SWITCH (LAL36000M) NEW IN BOX
版权声明