a job as a packer 包装者的工作
Norma Jones worked as a packer in a local chemical factory.
诺玛·琼斯在本地一家化工厂作包装工。
This phenomenon was observed by Craig Packer, a wildlife biologist at the University of Minnesota.
这种现象是明尼苏达大学的野生生物学家克雷格·帕克尔观察到的。
A completion component, generally included in the lower assembly near the packer, that allows communication between the tubing and annulus.
一种完井部件。它通常包括在接近封隔器的下部组合中。它用来提供在油管与环空之间的连通。
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