球体的

This problem dates back to 1611, when Johannes Kepler conjectured that the best packing arrangement for identical spheres was arranging them in what is now called face centered cubic packing - similar to how one sees cannon balls stacked.

这个问题可追溯到1611年约翰尼斯·开普勒提出堆积等大球体最佳方法的猜想（译者注：当等大球体按照--球心位于正方体各面的中心上--的形式，并且将第一层摆放成六角形时，它们占用的空间最小，对空间的利用率可以超过74%），现在把这个方法叫做面心立体堆积法--类似于加农炮弹的堆积方式。1998年，安娜堡密西根大学教授托马斯·C·黑尔斯证明了这个猜想。

This study utilized 3-D cinematography analysis and connected with the mathematical principle of perpendicular bisecting plane, and with displacement changes of any two markers that mark the point on the surface of sphere to develop a kind of method to effectively and actually measure the spin rate and the axis of free rotational ball in the sky.

本研究利用3D摄影分析配合垂直平分面数学原理，藉由球体表面上任意两标志点的位移变化，发展出一种有效实际量测出空中自由旋转球体转速与转轴的方法，可提供空气动力学相关研究时旋转测量的重要依据。

The scattering model is composed of swimbladder model and fish body model. The swimbladder is modeled by gas-filled prolate spheroid, and the fish body, exclusive of swimbladder, by liquid-filled prolate spheroid.

散射模型由鱼鳔模型和鱼体模型两个部分构成，其中鱼鳔采用充满气体的椭球体模型，鳔除外的鱼体采用充满液体的椭球体模型。

High-pressure acting on samples were produced by shock wave front converging in metallic ball. Destruction and metallograph of metallic ball after shock treatment were studied.

在该装置上，利用冲击波由金属球体表面向中心汇聚形成的高压，对样品进行了冲击处理；分析了回收的金属球体内、外破坏情况及金相组织变化。

Ball and plug is the same type of valve, only its closure is a sphere, the sphere rotates around the body axis to achieve open and close a valve.

球阀和旋塞阀是同属一个类型的阀门，只有它的关闭件是个球体，球体绕阀体中心线作旋转来达到开启、关闭的一种阀门。

In order to embellish the tower body, the designer installed the dazzling crystal upper and lower spheres and the capsule with full ingenuity, making it possible for tourists to have a bird view of the ground scenery from a great height and further bringing a variation curve to the straight tower body.

为了美化塔身，设计师巧妙地在上面装置了晶莹耀眼的上球体、下球体和太空舱，既可供游人登高俯瞰地面景色，又使笔直的塔身有了曲线变化。

In this article, the other half of ball reaction will be broken down and investigated.

前一篇文章我们提到球心动态与球体表现的关系，在这一章节，我们将深入剖析另一方面关於&球体反应&的部分。

In July, an international team of craftsmen unveiled an unusual pair of balls - believed to be the roundest objects in the world.

今年7月，一个由工程师和能工巧匠组成的国际团队制作了一对完美的硅球体，该硅球体被认为是世界上最圆的物体。

Using linear accelerator,the dose rate of the 6MV X-ray was 2Gy/min.The A549 spheroids was not more sensitive to low doses of single radiation.After exposure to 2-8Gy radiation,the spheroids recured quickly.Thetreatment of fractional radiation were more effective than single ones.With the increase of radiation doses,the 〓-M% block increased,numberof dead and apoptosis cells increased.

直线加速器产生的6MV高能X射线，2Gy／min的剂量率照射，A549多细胞球体对低剂量单次放疗不太敏感，2-8Gy范围内低剂量放疗后球体细胞很快增殖复发，分割放疗疗效优于单次放疗。

Tai Chi for a round of three-dimensional space like a ball of any one point will touch the entire body of Zhoushen from the rotation and displacement, where next to where the "continuity" is very close convergence between the action, there was no obvious Duandang phenomenon, If Xingyunliushui, the Yangtze River surging waves, continuous.

太极之圆犹如一个三维空间的球体，触动任何一个点都会引起整个球体周身的转动和位移，挨着何处何处转；&连贯&，是动作之间衔接非常紧密，没有明显的断档现象，如行云流水，滔滔长江波浪，连绵不断。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。