The rubber material's mechanic performance of the packer determines the packer's sealing performance.

封隔器胶筒橡胶材料的性能决定了封隔器密封性能的好坏。

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Packing element shoulder protection and large locking structure improves the properties of the packer.

封隔元件肩部保护结构和定位大锁块的采用，提高了封隔器的密封、坐封和解封性能。

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Subsequent application of tension or compression, depending on packer design, will set the packer elements.

随后施加拉张力或压缩力(取决于封隔器的设计)使封隔器密封元件坐封。

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Do we offer what we dub packer editions of problem sets which extensively cover the same material but with a more technical sophistication, with more detail, and these are simply options that students in this course can elect as per the syllabus.

我们提供涵盖同样内容,但具有更多技术性细节的,我们称之为习题包，其中有更详细的信息,这些只是按照教学大纲的要求让同学们可以自主选择。

哈佛公开课 - 计算机科学课程节选

When the Packer relationship ended in divorce, the Viking courtship began and remains in full bloom.

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In 1852, he became the packer for Empress Eugenie, which set him off for founding his own company in 1854.

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The next class I suggested to the students that they would be telling the story of the packer to their people in 30 years.

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