A depression usually brings bad weather.
低气压通常带来坏天气。
A depression usually brings bad weather.
低气压通常带来坏天气。
The procedure and characteristic of the arc discharge,feature of ignitron,firing way,structure features and its application are described in the paper.
汞弧光放
是一种低气压气体放现象,放
密度
。
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