Via researching work principle of batteries and influence SOC, We put forward mathematics model for SOC, and formula for calculating inner resistance of batteries.
通过对蓄电池的工作原理以及影响SOC的研究，得出SOC的数学模型，并提出计算蓄电池内阻的公式。
Reviewing the researching results and calculating methods of the bearing capacity mechanism of single pile, pile groups or cooperation of piles and pile caps affected under lateral loads.
回顾、总结了目前水平荷载作用下单桩、群桩、以及桩和承台共同工作的受力机理研究成果和分析计算方法；
A calculating and analyzing formula is provided, from the point of view of slipping contact stresses, for the researching of many practical projects concerning the wheel-rail relations.
从滑动接触应力的角度，为轮轨关系的许多实际课题的研究提供了一个计算分析公式。
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