基本解释[機] 方頭螺栓；木螺栓英汉例句雙語例句True or False: A lag screw and a hex head machine bolt of the same diameter will take the same size masonary anchor?是非題：拉力螺釘和相同直逕的機用螺栓是否取自相同的甎石錨栓？lag bolt更多例句词组短语短語lag g bolt 短螺栓;方頭螺栓lag bolt更多词组专业释义機械工程方頭螺栓經濟學短螺栓