pigging frequency造句

例句与造句

1. Three precautionary measures to prevent natural gas hydrates in pipe from blocking are put forward , that is , not to used bending pipe if possible during construction stage ; increasing pigging frequency before pipeline commissioning to elimninate water within pipe ; injecting inhibitor in regular way
   提出了三项预防水化物的措施：施工阶段避免过多使用弯管；投产前增加吹扫次数，彻底清除水；运行初期定期注入抑制剂。
2. It's difficult to find pigging frequency in a sentence. 用pigging frequency造句挺难的