Ray equation is derived from Fermat's principle in variation form.

本文由费马原理的变分形式，导出光线微分方程。

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Stress analysis in variation states at crack tip and notch crown tip is presented.

分析了椭圆孔口端点和裂纹端点处的变动态应力。

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The observed process of sediment delivery is similar to that of runoff in variation.

实测输沙量变化过程与实测径流量变化过程相似。

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Yeah. Absolutely. A lot of emphasis, a lot of variation in tone, and the italics are part of the representation of that.

对，绝对是的，很多的强调，很多语气上的变化，而斜体字就是它的表示方法之一。

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So we gonna back up in that previous variation Let's just see if we can pick up what the missing third part here.

我们要回到刚才的变奏,看看我们能不能捕捉到,缺失的第三部分

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And once you hit puberty, suddenly there's huge variation in the abilities you have to learn language.

一旦你到了青春期,学习语言的能力会在突然间,发生巨大的变化

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But Dr Emanuel's point is that even the worst predicted rise will be lost as noise in the variation in hurricane numbers from year to year.

ECONOMIST: Eye on the storm | The

Variation in attitudes towards violence is paralleled by variation in attitudes towards sex and marriage.

FORBES: Morality: Nature or Culture?

Variation in one characteristic must be independent of variation in other characteristics.

ECONOMIST: A master of evolution takes a last long look at Darwin