例句與造句

1. The products includes : the tubes for structural purpose , fluid transportation tubes , the compo tubes , the heterogeneous tubes , the boiler tubes , tubes for hydraulic cylinders , the tubes for bearing , the tubes for petroleum well , and so on
   產(chǎn)品品種有：結(jié)構(gòu)管流體管合金管異型管鍋爐管液壓鋼體管軸承管油井用管等。
2. It's difficult to find fluid transportation in a sentence. 用fluid transportation造句挺難的