发布时间:2025-02-02 13:36:41
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 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41一般室内是不是都是暗盒开关如果额外加开关和电线才装的明盒开关
2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41 2025-02-02 13:36:41