发布时间:2025-02-05 10:36:28
一般可以用天沟总长(mm)x截面展开(mm)x 厚度(mm)x 7.85 /1000000
天沟重量(T)=天沟总长(mm)x截面展开(mm)x 厚度(mm)x 7.85 /1000000
请问打玻璃的玻璃胶嘴怎么捏的是鸭子嘴这种的好吗我怎么一捏一个坑呢而且用用就变形了谢谢哪位高
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