ZB-RC-GA-VV补偿导线 ZB-SC-GA-VP2VP2补偿导线 ZR-TX-HBF4 ZR-TX-HBF4电缆 ZR-TX-HS-VV电缆 ZR-TX-GS-VV ZR-TX-GB-VV电缆 ZR-KX-GA-VVP ZR-KX-GS-VVP电缆 ZR-KX-GB-VPVP ZR-KX-HS-VPVP电缆 ZR-KX-GA-VPVP ZR-KX-GS-VPVP电缆 NX-HBF4RP1 NX-HBRP1电缆 NX-HF4BRP1 NX-HB-FVRP1电缆 NX-HBF4RP1 NX-HBF46RP1电缆 JX-FF46R JX-HS-FFR补偿导线特性