BVBVVBVVBBVR电源线的区别 BV、BVV、BVVB、BVR电源线是什么意思?(图解) 2008-08-12 15:50 1、BV、BVV、BVVB、BVR电源线:简单的来说: vv在电线术语是指两层聚露乙烯意思; ??? BV聚露乙烯绝缘铜芯线,独芯线; ??? BVV,聚露乙烯护套铜芯线,两芯线; ??? BVVB聚露乙烯护套铜芯线,是三芯线; ???