The vacuum performance of threaded-adhesive joints was investigated experimentally using the helium mas.

本文采用氦质谱仪对螺纹粘接接头的真空性能进行了实验研究。

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Therefore, the cyclic stress caused by repeatedly cooling and heating during the usage of non-magnetic Dewar is one of the important reasons that causes the decrease of vacuum performance.

因此，无磁杜瓦在使用过程中反复冷却及复温所产生的循环应力载荷，是导致其真空性能下降的一个重要原因。

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Vacuum Forming ceramic fiber blanket in addition to bulk ceramic fiber cotton with a fine performance, but also has good strength and flexibility, is a multi-functional products.

陶纤真空成型毡除具有散状陶瓷纤维棉的优良性能外，并具有良好的强度和弹性，是一种多功能的产品。

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In order to assess executive pay, one has to raise the quality of the discussion in order to consider pay vs. performance rather than just look at pay in a vacuum.

FORBES: CEO Pay: When Highly Paid Is Not Overpaid