Figure 4 - 2 shows a present - day laboratory version of the electroscope.

图4 - 2就是目前实验室里的验电器样式.

辞典例句

The leaves of the electroscope slowly diverge.

验电器的叶片慢慢张开.

辞典例句

Figure 4 - 2 a present - day laboratory version of the electroscope.

图 4-2 就是目前实验室里的验电器样式.

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Step 3 : If the aluminum foil ball is repelled away from the dish, the electroscope works.

步骤 三: 如果这颗铝箔球和锡箔烤盘彼此排斥,就表示你的验电器成功了.

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