基本解释對接銲同根派生 butt-welding相关词英汉例句Some crack extension probably developed from the unfused section of the butt weld across the thickness of the stiffener during transport and erection.有些裂紋可能在運輸和安裝過程中就從加勁肋對接銲未熔透処開始發展。butt-welding更多例句