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Common terms of vacuum

Common terms of vacuum

2023-07-20

1. Vacuum: In vacuum science, the meaning of vacuum refers to the state of gas below an atmospheric pressure in a given space. People usually refer to this thin gas state as a vacuum condition. 2, vacuum degree: vacuum degree as the name implies is the degree of vacuum. The degree of gas dilution in a vacuum state is usually expressed by "high vacuum" and "low vacuum. High vacuum degree means "good" vacuum degree, and low vacuum degree means "poor" vacuum degree. The so-called "vacuum" refers to the gas state in a given space, the pressure is lower than 101325 Pa SCA (that is, a standard atmospheric pressure of about 1013hPa). In the vacuum state, the degree of rarefaction of the gas is usually expressed by the pressure value of the gas. Obviously, the smaller the pressure value, the thinner the gas. Vacuum pump limit pressure: the lowest pressure that the vacuum pump can reach. 4. Ultimate vacuum: the vacuum container is stabilized at a certain degree of vacuum after being fully pumped.

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