yanyan1: FHJGJG

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Because the working principle of various electric vacuum devices is based on electric and magnetic fields to control the movement of electrons in space so as to enlarge, oscillate and display images. And vacuum pump system can prevent the electrons and the collision of gas molecules, ensure that the movement of electrons in the space, to avoid poisoning launch thermionic cathode oxidation, smoking inside the electronic devices into different requested for vacuum electronic devices (vacuum degree and guarantee the normal work of the electronic device.

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Because the working principle of various electric vacuum devices is based on electric and magnetic fields to control the movement of electrons in space so as to enlarge, oscillate and display images. And vacuum pump system can prevent the electrons and the collision of gas molecules, ensure that the movement of electrons in the space, to avoid poisoning launch thermionic cathode oxidation, smoking inside the electronic devices into different requested for vacuum electronic devices (vacuum degree and guarantee the normal work of the electronic device.

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