Outgoing condensate does not appear to have a pigging system .

外输凝析油未配有清管系统。

Living here is like pigging it .

住在这里跟住猪圈没两样。

He is used to pigging it with the poultry .

他习惯于将猪与家禽圈在一起。

A pigging system should be included .

应包含清管系统。

Pipeline design essential in making pigging plans .

制订清管计划的管道设计基础。