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發(fā)布時(shí)間: 2020-3-11 14:56
正文摘要:本帖最后由 NEC 于 2020-3-11 15:00 編輯 如圖，請(qǐng)問(wèn)自攻牙螺絲的承重力怎樣計(jì)算？要保證零件從2米處跌落不會(huì)出現(xiàn)問(wèn)題 |
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