| 摘要 |
In a gas discharge tube in accordance with the present invention, one or both of the inner wall face and outer wall face of a side tube body are provided with a coating made of a glass material or ceramics. As a result, the side tube body can be made of various materials regardless of properties of the gas filling the inside, whereby the gas discharge tube can have a wider range of processed forms and smaller dimensions at the same time, and its mass production can freely be carried out.
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