Reliability of the sealed vacuum device is very important, and the main reason that affects reliability is its vacuum.
密封电真空器件的可靠性尤其重要，而影响其可靠性的主要因素是真空度。
It is composed of two parts: the vacuum device and the signal collecting system.
该系统主要由真空装置和信号采集系统两部分组成。
In addition, they usually have a vacuum device to test the operation of vacuum-advance mechanisms.
通常还有一个真空装置，用于检查真空点火提前装置的工作情况。
Different from the imported conventional one, it is an X-ray screen lens coupled with a brightness intensifier, and is a non-vacuum device.
不同于常用的进口真空型X射线影像增强管，组合新型X射线影像增强器是由X射线屏和亮度增强器经过透镜耦合而成的非真空型组合器件。
A simple electrical vacuum device model is described in this paper, some simulations are given afterwards.
文中还提供了对一个简单电真空器件模型的模拟计算。
Use of machinery, physics, chemistry, physical and chemical methods such as containers for the exhaust to obtain and maintain a vacuum device.
利用机械、物理、化学、物理化学等方法对容器进行抽气，以获得和维持真空的装置。
Use of machinery, physics, chemistry, physical and chemical methods such as containers for the exhaust to obtain and maintain a vacuum device.
利用机械、物理、化学、物理化学等方法对容器进行抽气，以获得和维持真空的装置。
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