字典網>> 英漢字典>> W開頭詞條>>welding portion的意思 漢英字典welding portion中文翻譯：【化】 焊接部分; 施焊部分welding portion字典網相關詞條：welding neck flange welding manipulator welding alloy welding agent welding metal cracking welding tongs welding equipment welding operator welding subassembly welding leads