三阶导数是由原函数导数的导数的导数。
三阶导数
双语例句原声例句
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方法采用三阶导数光谱法。
METHODS The third derivative ultraviolet spectrophotometry was used.
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目的拟合列车车轮踏面的实恻轮廓曲线，方法采用三阶导数连续的分段曲线拟合法。
Aim To determine the measured profile of a wheel in railway vehicle. Methods So - called piecewise curve-fitting method of the third derivative continuity is employed.
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文中给出放大器的速率方程组的解，并在此基础上导出理想放大器的前三阶导数的解析表达式。
By finding out the solutions to the rate equations of the amplifiers, the analytical expressions of the derivatives, up to the third order, of Pout with respect to Pin have been deduced.
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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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I think the main reason is that there are no equations that involve the third derivative explicitly.
我想主要原因是因为还没有等式,明显涉及三阶导数
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The third derivative, unfortunately, was never given a name, and I don't know why.
遗憾的是三阶导数没有专门的名称,我也不知道这是为什么
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