The vacuumperformance 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。
2
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 vacuumperformance.
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。
3
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.