基本解释[機械工程]埋頭词组短语短語Counter -sunk head 埋頭;靜心counter sunk head rivet 埋頭鉚釘counter sunk head bolt 埋頭螺栓counter sunk ovel head rievt 埋頭凸頂鉚釘counter sunk oval head rivet 埋頭凸頂鉚釘counter sunk head更多词组专业释义機械工程埋頭