left-hand three finger rule的意思|示意
美 / /
英 / /
左手三指定则
left-hand three finger rule的网络常见释义
左手三指定则 ... left-hand thread tap ==> 左旋螺纹丝锥 left-hand three finger rule ==> 左手三指定则 left-hand tool ==> 左切刀,反手刀具 ...