electroscope造句
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.
The leaves of the
electroscope slowly diverge.
验电器的叶片慢慢张开.
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.