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。
National data masks the very large variation in the performance of individual universities.
全国的数据掩盖了个别大学表现的巨大差异。
"What we were surprised at was the variation," he said in a telephone interview.
他在接受一个电话采访时说：“让我们感到惊讶的是变异。”
An incredibly tiny fractional variation in the system energy.
极小的变化部分，对于系统能量是一个。
There was no variation observed in antidepressant use by income group.
没有观察到各收入阶层在抗抑郁药使用上的变化。
This type of genetic variation is more common in those with brain disorders, they noted.
他们注意到，这类遗传变异更加经常和大脑紊乱有关。
In fact, the goal should be to allow variation to enable each project to succeed.
事实上，目标应该是变化能够使每个项目成功。
Women who were not ovulating showed no similar variation in behavior.
不处于排卵期的女性的表现，则在行为上没有类似的变化。
The second function computeZValue in Listing 6 is just a variation of the first function.
清单6中的第二个函数computeZValue是第一个函数的变种。
Your statement or a minor variation can be used in response to any question asked.
你的表述或者一个微小变化可以用于回答任何被提及的问题。
Figure 7: in the function test phase, coverage and variation are dominant.
图7：在功能测试阶段，覆盖和变体占主导地位。
In the context of this article, I'm referring to the platform variation.
在本文的上下文中，我指的是对平台进行虚拟化。
Transport variability-variation points can be implemented in a service's transport protocol.
传输可变性——可以在服务的传输协议方面实现可变点。
The global drop in stillbirths also masks a wide variation within countries.
全球死产数的下降还掩盖了国家之间巨大的差异。
The conclusion is: It's a variation in space, not in time.
结论是：它是空间的变化，而非时间的。
It can explain more of the variation in the dependent variable.
它可以解释更多的因变量变动。
There is always variation from year-to-year in nature.
年复一年，大自然总会发生变化。
Next, there is variation in what to call things.
其次是在叫什么东西的变化。
This variation in color creates a subtle effect when they are viewed from city side.
这种颜色的变化产生了微妙的影响时，从城市的可视角度。
they show variation in different individuals.
例如，它们在不同的人中显示差异。
Yet only discernible variation is in growth rate .
但仅在生长速度上能分辨的差异。
Do the same for the trees in order to get some color variation.
在这些树上做一些这样的步骤来获取一些颜色变化。
In addition, the variation of pitch had some effect on the image noise.
此外，当螺距改变时，图像噪声亦呈现出规律性的变化。
In this sense, Coase theorem is a variation of normal price theory.
从这种意义上说，科斯定理乃是标准价格理论的一个特例。
In view of the variation in the dip, here could be a local anticlinal fold.
鉴于倾斜方向的变化，此地可能存在一个局部的背斜褶皱。
The petitioner ask for a variation in her maintenance order .
上诉人要求对她生活费的命令的条件进行变更。
This normal variation in rhythm is known as sinus arrhythmia.
节律的这种正常变化称为窦性心律失常。
Language variation is a widespread social phenomenon in a language.
语言变异是一种普遍存在的社会语言现象。
Language variation is a widespread social phenomenon in a language.
语言变异是一种普遍存在的社会语言现象。
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