提醒一下,mechanical engineer, 1.5mm與3.0mm的差別是:3.0mm的抗抗拉能力提高一倍,抗彎能力提高4倍。
日本的mechanical engineer比你還牛,0.0mm(沒有)。
提醒一下,mechanical engineer, 1.5mm與3.0mm的差別是:3.0mm的抗抗拉能力提高一倍,抗彎能力提高4倍。
日本的mechanical engineer比你還牛,0.0mm(沒有)。
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