发布时间:2025-01-19 08:44:40
墙角线。墙角线原名垂直线是cad中进行贴瓷砖时对其整齐标线修正的标准。因为其每次都需要于墙角对其又被成为墙角线。
三相深井水泵出故障想测水泵是否烧了在井口的三条线应该怎么测万用表应开哪个档位怎么测
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