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。
Magnetron has filamentary cathode with small time hearting the shielded cathodic site liquid and air cooling and also the filter built-in by radio.
为了减少无线电干扰对测试准确度的影响，长期以来测试需在屏蔽室中进行。
For removing the effects of interference on the accuracy of test results, many tests must be carried out in a shielded room for a long time past.
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