“油滴”造句
这时有些电子或离子与
油滴碰撞而粘附在
油滴上.
Some of the electrons or ions then collide with the drops and stick to them.
当给予适当照明时,这样小的
油滴在显微镜下是很容易看到的.
A drop of oil of this size is easily seen in a microscope when suitably illuminated.
这些
油滴一般都带负电, 但偶尔也发现有带正电的.
The drops are usually negatively charged, but occasionally one with a positive charge is found.