Conventionally, the direction of electric current is that of the flow of the positive ions.
为了表示电流总的作用，通常取正载荷子的流动方向为电流方向。
One thing is the balance or ratio between positive and negative ions.
一种情况是正负离子平衡问题，或比率问题。
Positive and negative ions in a solution can move and conduct a current .
溶液中的正离子和负离子可以移动并且导电。
Positive and negative ions fixed in a solid do not conduct a current.
固定在固体中的正离子和负离子不导电。
Positive and negative ions fixed in a solid do not conduct a current.
固定在固体中的正离子和负离子不导电。
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