焊接: weld; welding; soldering; seal; sealing; sealing-in; shutting together 短语和例子电弧焊接 (electric) arc welding; 焊接材料 welding material; 焊接操作 welding operation; 焊接车间 welding shop; 焊接点 point of weld
预: Ⅰ副词(预先; 事先) in advance; beforehand 短语和例子预约 make an appointment; 预祝成功 wish sb. success; 他们将预付一百三十法郎。 they will pay a hundred and thirty francs in advance. 勿谓言之不预。 do not say that we haven't
