凹头螺钉,内六角头螺丝,窝头螺丝
The reason of cracking on the socket head screw is analyzed by means of composition analysis and microstructure tests.
通过对内六角螺钉的成分分析和组织检验,分析了其头部镦断的原因。
Top view of fluted socket head set screw. Selection box represents thread diameter.
凹槽插口螺钉的俯视图. 选择框代表螺纹直径.
瑞鸿网 · 高考英语
瑞鸿网 · 双语娱乐资讯
瑞鸿网 · 商务口语