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。
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。
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。
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。
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。
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