N one million ohms 百万欧姆 ( symbol: MΩ)
The insulation resistance of these motors should be kept above 1 megohm.
电动机的绝缘电阻应保持大于1兆欧。
Two types of high megohm resistors are widely used: carbon-film and metal-oxide.
广泛使用的高兆欧电阻器有两种：碳膜电阻器和金属氧化物电阻器。
On raining days, the insulation resistance of the generator often drops below 0.5 megohm.
在雨天，发电机的绝缘电阻常常降到0.5兆欧以下。
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