vacuum stability

The results proved that the vacuum sealant exhibited many excellent performances such as thermal stability, solvent endurance, clinging capability and vacuum hermetical capability.

结果表明：该真空密封胶具有良好的耐溶剂性能、粘结性能、热稳定性能及真空密封性能。

Special design vacuum sizing tank can ensure the stability of size and roundness, Speed controllers are used in extruder, haul-off to offer stability and precision.

特殊设计的真空定径箱，可以确保稳定的直径尺寸和圆整度，使用速度控制系统，使牵引速度稳定。

Speed close-circuit control of the molecule pump VVVF adaptive control is based on a vacuum degree in the vacuum room, which effectively soles the contradiction between the stability and the instability of the vacuum degree.

分子泵VVVF自适应控制的速度闭环控制建立于真空室真空度的基础上，从而有效解决了真空度稳定和陡降之间的矛盾。

Realizing this method will not only improve the heat stability of the native thermocouple gauge tubes but also can use the same vacuum gauges as usual without any change.

采用本方法不仅能提高国产热偶规管的热稳定性，而且还不需要对原来所配的真空计作任何改动，故极易推广普及。

Large vacuum tank structural strength and stability analysis

大型真空罐的结构强度与稳定性分析