Magnetron has filamentary cathode with small time hearting the shielded cathodic site liquid and air cooling and also the filter built-in by radio.

该磁控管具有加热时间短的阴极，屏蔽阴极，液体和空气冷却，内建无线电滤波。

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Low pit aspiration ratio and cracks of some bordered pits are the main reasons for increasing liquid impregnation after radio-frequency vacuum drying treatment.

具缘纹孔的闭塞率较低以及部分具缘纹孔周缘破裂是高频真空干燥后木材浸注性提高的主要原因。

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Then I heard one of the survivors say, either on radio or on television, that during the earthquake it was as if the earth had become liquid, like water.

后来我听一位幸存者说，忘了是广播还是电视，地震的时候大地像水一样。

youdao

At room temperature, the nuclei in a liquid are perpetually jostling back and forth between up and down, emitting and absorbing radio waves, with only a slight preference for up.

ECONOMIST: The cost of forgetting