发布时间:2025-02-02 13:33:56
不是,金属屏蔽是在半导体的外面是铜皮材料,象高压电缆等。保护套是在电缆外是铝或铅,铁制材料,象平常说的铠装电缆。导体、主绝缘、半导体层、屏蔽层、绝缘填充物、铠甲护套、外层塑料保护层。接地时一般通过编制的铜辫用锡焊到屏蔽层上,然后再接到接地极上。
二手房,实木地板,不想拆了,担心甲醛环保问题,怎么处理比较好
2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56出租家电注意事项 我家有个小洗衣机平时用的很少想租给别人需要注意什么事项呢
2025-02-02 13:33:56 2025-02-02 13:33:56小型的钢结构生态园餐厅每平米大体多少元36米32米包括四周封闭阳光板及空调系统
2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56 2025-02-02 13:33:56