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Meaning of 验电器

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yàn diàn (Trad.: 驗電器)
electroscope
Example Sentences
1
It was an electroscope which contained a small amount of radium.
2
When the fur is removed from the vicinity of the electroscope , the leaves return to the original angle.
3
As there was already pre-charge applied to the electroscope , an additional little charge caused reaction.
4
Step 3: If the aluminum foil ball is repelled away from the dish, the electroscope works.
5
300
The effect of the electrified triboelectrification rod with electricity is still obvious after 300 seconds to be tested by the electroscope.