Etolizing
多孔粉末烧结零件电解覆层法
🗣️ 情景例句
I would like to buy some stamps, please.
我想买些邮票。
I know he will be able to find way here.
我知道他会找到这里的路。
I shook my head and held up five fingers indicating that I was willing to pay $5.
我摇摇头，伸出5根手指表示我只愿出5镑钱。