general-purpose head 中文意思是什麼
general-purpose head
解釋
通用爆破彈頭-
General purpose bolts and screws - radii under the head
普通螺栓和螺釘頭下圓角半徑 -
General purpose bolts and screws - metric series - radii under the head iso 885 : 2000
普通螺栓和螺釘.米制系列.端頭半徑
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