1、
2、
As the two charge distributions separate, leaving positive and negative sheaths.
当两种电荷分布开始时, 就留下正离子鞘和负离子鞘.
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3、
A proton positive charge and an electron a negative charge, but a neutron has neither.
质子带正电,电子带阴电, 而中子既不带正电,也不带阴电.
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