半径

A portion of the wave front of a spherical wave whose radius is very large can be reigned as the wave front of a plane wave.

半径很大的球面波上的一部分波前，可以看作是平面波的波前，用惠更斯原理同样可求得其波前。

It is found that the levitation force can be remarkably enhanced by choosing optimum value of R or D, and the possibility of this enhancement for spherically curved reflectors is the largest.

发现通过选择最优化的R或D值，可以显著提高声悬浮力，并且谐振模式数越小，反射端截面半径越大，提高的程度就越大。

In this paper, based on nonlinear FEA software ANSYS/LS-DYNA, 3D dynamic simulation models of eighteen-type tubes for backward spinning was established. This paper not only obtained spinning force of tube backward spinning but also obtained the spinning force curves varying with the different reducer ratio, feeds, fillet radius for spinning roller, forming angle and diameter of spinning roller, and diameter blank inner.

以大型非线性有限元软件ANSYS/LS-DYNA为分析平台，通过对18种几何尺寸和参数不同的筒形件三旋轮强力反旋旋压过程的三维动态模拟，得到了它们的旋压力以及旋压力随不同减薄率，旋轮进给量，旋轮圆角半径，旋轮成形角，旋轮直径和毛坯内径的变化曲线。

According to road designing data of mileage,coordinate,azimuth angle of tangent or straight line,curve radius,the length of spiral line from main point of curve or straight line starting point,we can calculate the coordinates of center line points and boundary line point s in any form of road under the same coordinate system.

根据线路设计资料提供的曲线主点里程、坐标、切线方位角、曲线半径、缓和曲线长度的已知数据，计算出任意线形的中桩、边桩在线路统一坐标系中的坐标，利用全站仪极坐标放样程序，以线路附近的控制点或加密点为测站，准确、快速放样各点。

The spot weld radius is taken into account in this simulation methodand avoids fine local mesh comparing with the conventional algorithm.

这种模拟焊接的方式，考虑了焊点半径，又避免了传统算法要求对局部网格进行细化处理，减轻了工作量。

One unique attribute of the system is the use of a special removeable squirter assembly which is designed to allow access into tight concave radii.

系统的一个独特的属性是应用了一个独特的可移动的喷嘴，该设计是为了能够探测到半径很小的凹槽。

As for the spherical radius of 71.2037 mm,the standard error of 472.3 μm can be obtained.

实验结果表明：设计的光学球面自动测量系统可以对大曲率半径光学球面实现高精度测量。

Based on some basic hypothesis, the mathematic expressions of superheated steam heating area and heating radius are presented.

在一定假设的基础上，理论推导出了过热蒸汽带面积、加热带半径等的数学表达式。

In the steam pipe jacket trap, set a competent Road, close to the radius of the condensate pipeline in the water collecting well, and then use the small tubes lead to the trap.

在蒸汽管道上装疏水阀，主管道要设一个接近主管道半径的凝结水集水井，然后再用小管引至疏水阀。

The steam pipe jacket trap, set a competent Road, close to the radius of the condensate pipeline in the water collecting well, and then use a small tube lead to the trap.

在蒸汽管道上装疏水阀， ISO国际标准阀门主管道要设一个接近主管道半径的凝结水集水井，然后再用小管引至疏水阀。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。