发布时间:2025-02-01 00:23:35
一般吸顶音箱两边都有两个卡子,也可能是弹簧的,也可能是用螺丝的,你把前面网罩下来,可以看到内壁两侧应该有两个口子。如果是弹簧的卡子用一字改刀伸进去将它掰开,一边一边的取下来就可以了。有些型号的可能还需要把喇叭拆了才看得见留的卡子口。
生铁铸管怎么防锈除锈家九十年代的老房子所有的管道都是铸铁管现在生锈了请问怎么除锈
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