查询词典 plane surface

The technique of boundary-fitted coordinate system is used to overcome the difficulties resulting from the complicated shapes of natural river boundaries;the method of alternating direction implicit finite difference scheme is used to solve the partial differential equations in the transformed plane;and the technique of moving boundary is used to deal with the river bed exposed to water surface.

用适体坐标技术克服天然河道复杂的几何边界给有限差分法所带来的困难；用交替方向隐式有限差分格式求解变换平面上的偏微分方程；用动边界技术处理河床的淹露。

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

Angularity - Angularity is the condition of a surface, axis, or center plane, which is at a specified angle other than 0, 90, 180 or 270 deg.

角度--就是一个表面，轴，或中心面的相对与基准平面或基准轴的角度状态0，90，180，270除外

Mathematics the shortest line between two points on a mathematically defined surface (as a straight line on a plane or a an arc of a great circle on a sphere).

在数学定义上的表面上两点之间的最短的线（如平面上的一个直线或球体上大圆的一个弧线）。

Both of them are the normal distance of the tangent plane at the check point on the limit state surface in the generalized stochastic space and the asymptotic formula for Laplace''s integral respectively.

提出了利用广义随机变量空间失效极限状态曲面上验算点处切平面法线和Laplace型积分渐近公式两种确定任意分布的荷载变量相关下结构的可靠指标的新方法，改进了现行防波堤失效概率计算理论。

In this paper, a complex mapping function is devised to transform the contour surface of an arc crack to a unit circle on the auxiliary plane.

本文之研究方法乃是首先设计一复变函数，将原有弧形裂纹之几何形状映像至辅助平面成为一单位圆，然后再以此映像函数代入相关之边界方程式中。

In this paper, a complex mapping function is devised to transform the contour surface of an arc crack to a unit circle on the auxiliary plane. By substituting the mapping function into it governing boundary equation, the complex stress functions can be obtained as

本文之研究方法乃是首先设计一复变函数，将原有弧形裂纹之几何形状映像至辅助平面成为一单位圆，然后再以此映像函数代入相关之边界方程式中。

We automatically, External precision grinding systems, automatic surface Superfinishing center, laser welding and other sophisticated machining equipment to control the pre-processed products; fully automated computer-to the seizure, high-precision pressure tester and computer China-test plane, and other advanced product detection system to control the finished product assembly and testing of each link to a round of the device, inductors micrometer, and other sophisticated equipment to control the auxiliary equipment running and operation of the accuracy of the process.

我们以自动内、外圆精密磨削系统，全自动表面超精加工中心，镭射焊接等先进的机械加工设备来控制产品的前期加工；以全自动电脑分检、高精度压力测试仪和电脑泄程测试专机等先进的产品检测系统来控制产品装配和成品检测的每一环节；以圆度仪、电感测微仪等精密的辅助设备来控制设备运行和运行过程的精确性。

In a rectangular shape YBCO singledomain sample, there are many long, smooth and parallel growth stripes on the top surface, which indicates that the ab plane is parallel to the axis of the cylinder sample, the long narrow and smooth stripes are formed by the continues growth along a axis.

在ab面竖直生长的YBCO晶体中，样品表面光滑、平行的长直条纹是晶体沿ab面连续生长的结果，沿c轴方向的平行台阶，则是晶体沿c轴方向以层状方式生长所形成的，十字线夹角约78°。

A plane section of a surface of revolution containing the axis of revolution.

由一平面横切某物，通常与轴线成直角切割形成的断面。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了