凹面

And then there is a chin rest I am going to put my chin on and I'm going to be staring into quite a large concave perspective thing but within this a whole lade of cameras are going to scan my face so here we go.

接下来的过程中我将要把下巴搁在下巴架上，然后凝视一个相当大的凹面远景。在凝视的过程中会有很多相机扫描我的面部。我们开始下一步吧。

Among picosecond fluorescence spectroscopy setup, sample cell, one side is concave, and collimate optics system were designed and made. Which improve fluorescence collect rate 30%, and is key to experiment.

在荧光光谱装置中，设计制作了一侧为凹面的样品盒和准直光学系统，提高荧光的收集效率30%，对实验成功起了关键的作用。

8When the decay constant increases, the advertising cost increases in S shaped , but it decreases concave upward in concave shaped function.

8当衰变常数β递增时，除了在S型函数的广告支出呈现向上递增外，其他反应效果均为凹面向上向下递减。

3When mark price increase, the advertising cost, the optimal order and the lower bound of total profits increase in three cases. In the S shaped function, the advertising cost in three case decreases concave downwards, and in concave shaped function, the advertising cost increases concave upwards.

3当成本加成率m递增时，在三个个案中，广告支出、订购量以及利润下限都向上递增，在S型函数中，三个个案下的广告支出效果为凹面向下，而凹型函数中，广告支出效果则为凹面向上。

Measuring the focal length of concave lens using collimator;2. The relation between the focal length of a concave lens and its reflective image properties is analysed and deduced.

本文分析推导了透镜的凹面反射成像与凹透镜焦距的关系，介绍了利用此关系较方便地测量凹透镜焦距的方法。

Also used for the filing of concave surfaces with small radius.

它可以在小半径的凹面表面使用。

I had been sitting in geometry class for two hours, waiting for the professor to conclude his lecture about concentric circles and concaved figures.

我已经上了两个小时的几何课，一直等着教授结束这个关于同心圆和凹面图的讲座。

A fixed reference point on the concave side of a conic section.

圆锥截面凹面的固定参考点。

Rolling body is convex or concave spherical roller bearing heart yearned for the adjustment.

滚动体是凸球面或凹面滚子的调心向心滚动轴承。

In this thesis, we apply Coulomb's law and propose an external force to overcome the problem of traditional ACM that can not capture the cavities of an object. Assume that each node of a snake has its own electric charge, and the object boundary has opposite electric charge. Then object boundary will attract the nodes of the snake. This helps the contour easily to move to the object boundary.

本论文中，我们运用库仑定律的观念，提出了一个运用局部引力作为外力的方法，用以克服传统主动性轮廓模型在凹面处收敛不佳的缺点；假设物件边界带电，而主动性轮廓模型的结点带与物件边界相异之电荷，则物件边界会吸引著主动性轮廓模型各结点，使得模型曲线更容易靠近物件边界。

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。