a packer of的意思|示意

Pipe lodgepole-steel tunnel support technique is a strong composite support system consisting of advance pipe lodgepole, support stell vault, tin plate packer and working surface plug-back.

管棚复合钢支撑技术，是一个通过超前管棚、支撑钢拱、白铁皮隔离、工作面封堵的相互配合和共同作用，形成了具有强大支护抗力的复合支护体系。

Therefore, in well logging company, Henan oilfield, technicians have done a lot of tests and researches about packer ultrashort wave watercutmeter logging.

为此，河南油田测井公司进行了过环空集流产液剖面测井的研究和试验。

The packer and telescopic tube are designed to a whole body and V-shaped inflatable graphite sealing ring is used to form the sealing system, ensuring the sealing performance of.

它将封隔器与伸缩管设计成一体，采用V形膨胀石墨密封圈组成密封系统，确保伸缩管热力伸长时封隔器的密封性。

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。

This paper introduces a kind of new type self-sealing packer, whose hydraulic self-sealing mechanism replaces setting and releasing mechanism.

本文介绍了一种新型自封式封隔器，该片隔器采用液压自封原理，取消了封隔器的坐、解封机构和相应的操作。

LACKS FIRM: the food is in package form and appears to not bear a label containing the name and place of business of the manufacturer, packer, or distributor.

包装上没有标明制造商、包装商和经销商名称和地址：在此食品的包装袋中并没有相应的标签显示出制造商，包装商或者分销商的地址和名称。