发布时间:2025-02-05 00:03:45
用。单芯是指在一个绝缘层内只有一路导体。当电压超过35kV时,大多数采用单芯电缆,线芯与金属屏蔽层的关系,可看作一个变压器的初级绕组中线圈与铁芯的关系。400的铜单芯电力电缆套400定额用乘以单芯系数。系数(外文名coefficient),是指代数式的单项式中的数字因数。
(江南叶 立体剪花威尔顿机织欧式地毯 复古红 140*200cm)-适用对象
2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45昨天晚上不知道在哪里把笔记本的触摸板给禁用了现在不知道怎么重新开启了求大神指导啊win10的
2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45 2025-02-05 00:03:45