sphere pigging通球
pigging tools清管工具
smart pigging智能爬行器
pigging up生铁增碳
stream pigging顺流清管
pigging valve清扫管道阀;清管阀
pipeline pigging遁球扫线
pigging operations清管作业
pigging effect清管效果
Finally, in order to validate the result, pigging operation was worked on the Luliang oil pipeline, and comparison and analysis between the theoretic research results and the field practical situation was carry out.
最后,为了验证关于陆梁原油含蜡分析的结果,在陆石输油管道上进行了清管作业,并对理论研究结果与现场实际作了对比和分析。
参考来源 - 含蜡原油管道加剂运行优化研究N-COUNT（可数名词） A pig is a pink or black animal with short legs and not much hair on its skin. Pigs are often kept on farms for their meat, which is called pork, ham, or bacon. 猪
...the grunting of the pigs.
…猪的哼哼声。
（） → see also guinea pig
N-COUNT（可数名词） If you call someone a pig, you think that they are unpleasant in some way, especially that they are greedy or unkind. 猪 (用来比喻贪婪、刻薄的人) [非正式]
These guys destroyed the company. They're all a bunch of greedy pigs.
这些家伙毁了公司。他们是一群贪婪的猪。
PHRASE（习语） If you say "when pigs fly" after someone has said that something might happen, you are emphasizing that you think it is very unlikely. 等到猴年马月 [幽默，非正式]
When would they be hired again? Perhaps, as the saying goes, when pigs fly.
他们什么时候会被重新雇用？也许正像俗话说的，等到猴年马月吧。
PHRASE（习语） If you say that someone is making a pig of themselves, you are criticizing them for eating a very large amount at one meal. 狼吞虎咽 [非正式]
I'm afraid I made a pig of myself at dinner.
恐怕晚饭我是狼吞虎咽了。