绕轴旋转

Asphericity Q in 360 meridians could be calculated. This is the curvature coefficient for the corneal function of asphericity.

建立以角膜顶点为原点的笛卡儿空间三维坐标，绕Z轴旋转坐标，形成新的三维空间坐标系。

An ideal depolarizer can be combined with a λ/2 wave-plate and a λ/4 wave-plate rotating at different angular velocities with a certain ratio.

结果表明，让两波片以不同的角速度绕光线为轴旋转，当复合波片为一个λ/4波片和一个λ/2波片组合时，只要它们的角速度满足一定的比例时，可以组合成一个比较理想的退偏器；当复合波片为两个λ/4波片组合或为两个λ/2波片组合时，无论怎样旋转都不能组合成理想退偏器。

If the crystal is rotated about the incident ray as an axis, the ordinary ray remains fixed but the extraordinary ray revolves around it, as shown in Fig.

如果晶体绕入射线光轴转动，正常光线保持不动，而非常光线也绕它旋转，如图所显示的。

In graphic mode display 3D graphics rotating procedures.

在图形模式下显示3D图形绕任意轴旋转的程序。

As As it orbits the Sun, Mars rotates on its axis, an imaginary line through its center.

火星在绕太阳运行的同时绕着其自身的轴旋转，这个轴是一条假想的穿过其中心的线。

Rotating around one axis does not reorient the other axes, and you can end up in a situation where two axes cancel eachother out, making it look as if one of the rotation axes is \"broken\".

绕着一个轴旋转不能够再适应其它的轴，你可以在一个位置停止，在那里两个轴相互抵消掉了，那看起来就好像其中一个个轴断了一样。

On the engineering application, the method of rotating stabilization is usually used to guarantee the directional stability in flight of rocket system because of its validity and simpleness.

旋转稳定方法由于其有效性和比较简单，在工程上，常常采用弹体绕自轴旋转的方法保证火箭系统飞行方向的稳定性。

For wurtzite-type crystal, [Zn-S4]6- and [Zn-S4]6+ with different crystal positions distribute in the form of layers along c axis, where the two layers of tetrahedrons whirl 60 around c axis, so the crystal is mainly like hexagonal cone.

在纤锌矿型晶体中，[Zn-S_4]~(6-)和[Cd-S_4]~(6-)四面体沿c轴呈层状分布，上下两层四面体的结晶方位不同，两层四面体绕c轴旋转60°，晶体的结晶形貌为六方锥状。

In other words, at some point during the inversion, the top stops spinning around the axis through the stem and then starts to rotate the other way.

在倒置的过程中，陀螺以绕中轴旋转，然后开始向另一方向旋转，同时，重心上提，些陀螺非常有趣的问题是如何节省下能量和角动量。

The long V block putted in the arch ribbed plate to limit two degrees of freedom in x axis and the z axes two degrees of freedom, the iron putted in the hole end limit to the degree of freedom which circle the y rotation of axis, the supporting block putted under the ribbed plate to limit degree of freedom along the y axis migration.

长V型块置于拱形肋板后限制x轴的两自由度和z轴的两自由度，挡铁置于孔端限制绕y轴旋转的自由度，支承块置于肋板下方限制沿y轴移动的自由度。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。