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Figure 4 - 2 shows a present - day laboratory version of the electroscope.圖4 - 2就是目前實(shí)驗(yàn)室里的驗(yàn)電器樣式.The leaves of the electroscope slowly diverge.驗(yàn)電器的葉片慢慢張開.Figure 4 - 2 a present - day laboratory version of the electroscope....

electroscope的音標(biāo)：electroscope的英式發(fā)音音標(biāo)為：[?'lektr?sk??p]electroscope的美式發(fā)音音標(biāo)為：[?'lektr??sko?p]...

n.驗(yàn)電器...