例句與造句

1. The check valve seats shall be of molded thermoplastic construction
   止回閥閥座應(yīng)該是模制熱塑塑料結(jié)構(gòu)。
2. Check valve seats are replaceable without the use of special tools
   止回閥閥座可更換，不需要采用特殊工具。
3. Boilor check valve seat
   止回閥座
4. Check valve seat
   止回閥座
5. It's difficult to find check valve seat in a sentence. 用check valve seat造句挺難的