基本解釋[機械工程]埋頭詞組短語短語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更多詞組專業(yè)釋義機械工程埋頭