Reversible chemical reaction process of mixed reactants in the condition of constant pressure and temperature 等温等压下反应混合物的可逆化学反应过程
2.
Primary batteries are used once and then discarded ; secondary batteries operate from a mostly reversible chemical reaction and can be recharged several times 一次电池使用过一次就被丢弃；二次电池以一种（通常是）可逆的化学反应工作，可以多次充电。
