Objective To study the influence of center of gravity excursion in standing on function outcome of stroke patients.

目的研究脑卒中偏瘫患者站立时重心的偏移对其功能预后的影响。

youdao

If you knew only the third derivative of the function, you can have something quadratic in t without changing the outcome.

如果方程里有三阶导数,你就可以引入一个二次项,但是结果却不会变

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