发布时间:2025-01-23 21:17:15
RVV线全称“铜芯聚氯乙稀绝缘聚氯乙稀护套软线”,后面的300/300v是额定电压, RVVP全称铜芯聚录乙烯绝缘聚录乙烯护套屏蔽软电缆,家用电源线一般用BVR或PVV,不用RVVP,RVVP用于要求抗干扰的场合,1000w用1.5mm的BVR或PVV即可,家庭电线一般常用的有1mm,1.5mm,2.5mm,4mm的电线.
九阳烧水壶盖子我的水壶型号是k15f23盖子里的弹簧怎么安装
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