圆柱体

In chapter 6 and 7, having discussed the description method of the shape of bube-bent part and it's CSG data structure, a 3-D shape description method of using boolean operation by cyclinder and torus primitives is proposed.

第六章和第七章分别探讨了管材弯曲件三维描述方法及其CSG数据结构，提出了采用圆柱体素与圆环体素，通过适当布尔运算来描述其三维形状，并实施区间CSG扫描线和光线跟踪算法，在微机上实现了管材弯曲件三维浓淡图形的生成。

This should be expected in view of the much greater mass contained in the cylinder.

鉴于圆柱体包含的质量大得多，这是在意料之中的。

See how the horizon line is in the middle of the cylinder and cube, but not the others?

你看到地平线在圆柱体和立方体上都是在中间的位置，但其他的是在中间么？

What's the height of cylinder?

什么叫圆柱体的高？

Bottom simulating reflector ; Miniature temperature probe ; Gas Hydrate ; Temperature gradient ; Cylindrical temperature decay function

指导教授徐春田；中文关键字仿拟反射层；小型温度探针；天然气水合物；背景温度梯度；圆柱体温度衰减函数

Since the multiple scattering should be considered, the scattering problem of many-cylinders is more complicated than single cylinder. By using scattering matrix method to solve the scattering problem of many-cylinders, first we have to express the incident fieldand scattered field by special function（for example, Bessel function and Hankel function）under cylindrical coordinate, then use the addition theorem of special function to get a linear system of equations to relate the incident field coefficients and scattered field coefficients. The incident and scattered field coefficients for every cylinder can be solved from the linear equations by matching electromagnetic boundary condition pointwisely.

单颗圆柱散射体的散射场解析解很早就被解出，而多个圆柱阵列的散射场问题因为涉及到入射光在圆柱与圆柱间的多重散射，故散射行为较单颗圆柱的散射复杂，因此圆柱阵列的多重散射问题需要利用加法定理来处理；散射矩阵法的主要精神即是先用圆柱座标下的特殊函数对平面波和圆柱散射体的内外域电磁场做无穷级数展开，再藉由特殊函数的加法定理将所有圆柱散射体的展开中心移到同一个展开中心，最后可以得到一组连结整个散射系统的入射电磁场系数及散射电磁场系数的线性方程组，将该组线性方程配合电磁场在散射体边界的连续条件，便可分别求出圆柱阵列中各个圆柱体的内部电磁场与外部散射场，再利用线性叠加原理即可求得整个圆柱系统的全域电磁场分布。

Competitions will be run on the basis of using cylindrical sectors.

比赛将在使用圆柱体区域的基础上进行。

A solid bounded by two parallel planes and such a surface,especially such a surface having a circle as its directrix.

圆柱体由两个平行平面和这样的表面，特别是有一个圆作为其准线的平面所形成的柱体

Soak the cylinder of the wafers in hydrofluoric acid to disjoin the wafers.

将此"圆柱体"浸泡在氢氟酸中，使硅片互相分离。

In this paper,a technique for numerical calculation of a dual-cylindrical antenna array is investigated.The admittance matrix of the equivalent network is also presented.

本文介绍了一种双圆柱体结构全向天线阵列的表面电流及等效端口导纳矩阵的计算方法，根据这个算法，本文计算了在一定物理尺寸下该天线阵列的电流分布和端口导纳矩阵。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。