The measuring principle of static differential pressure is pointed out. Three characteristics of the measuring method are set forth.
指出了静压差测量法的原理，并阐述了该测量方法的三个特点。
By measuring the charging efficiency and a set of theoretical reasoning the theoretical internal pressure curve was obtained.
本文通过对电池充电效率的测定以及一系列的理论推导和数学计算，得到了理论上的内压曲线。
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