Machined hole I have a discharge chamber with a hole in the top.

加工孔我有一个放电室，与一个大洞顶部。

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And the other is to use the recordings of the electron current waveforms in the gas mixtures studied in a discharge chamber.

另一是由高能脉冲激光释放电子，记录预放电电子电流波形来确定混合气体的临界电场强度。

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The timer then opens the lower valve for a fixed period of time, permitting the - plastic powder to discharge from the intermediate chamber.

定时装置随后开启下面的夹管阀并持续一段固定的时间，让塑料粉末从中间罐腔中排出。

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