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俺跟人家說,,在中國,,只能做好你自己, |
點評
小螺栓,,一般擰過載了,,就是‘拉-剪’結合的,斷口有角度的,,大概20-30度,,基本是‘拉斷’,平斷口的,,是‘剪切斷裂’,,有潤滑的擰緊,,一般斷口有‘收縮’,高強螺栓,,斷口基本沒有收縮,,
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