pigging

n.生铁；生小猪；像猪一样地生活

动词pig的现在分词形式.

A furnace in which pig iron is converted into steel by the Bessemer process. 炼钢熔炉一种通过酸性转炉法将生铁练成钢的设备

That pig will weight4 score, dead weight. 那只猪重80磅，宰掉后的净重。

Pig iron used as permanent ballast. 压载铁做为永久性压舱物的生铁

Pig iron is converted into steel by removing most but not all the impurities. 生铁变成钢要除掉大部分而不是全部的杂质。