半圆柱

Bracteole apex 1-pinnate/pinnatifid; ultimate leaf segments lanceolate, 0.5–5 mm broad; pedicels terete.

Bracteole 顶1回羽状/羽状半裂；披针形的末级叶裂片，宽的0.5-5毫米；花梗圆柱状。

The cylindrical shell of open circumambience with both ends simply supported and the cylindrical shell with clamped ends are analyzed, then the cylindrical shell of close circumambience with simple support and the other end clamped along straight edges are analyzed.

分析了两端简支的封闭圆柱壳、两端固定的封闭圆柱壳和两端简支直边固定的开敞圆柱壳的振动特性，同时研究了环向半波数对圆柱壳固有频率的影响，并给出了不同边界条件的振型图。

Then, the differential equations are solved by the Fourier expanding and Hankel integral transform method. Integral solutions of soil skeleton displacements and pore pressure as well as the total stresses for poroelastic media are obtained. Furthermore, a systematic study on Lamb's problems in transversely isotropic saturated half-space is performed. Integral solutions for surface radial, vertical and tangentical displacements are obtained both in the case of drained surface and in the case of undrained surface excited by vertical and tangentical harmonic resources respectively. Numerical results show the obvious difference between the model of isotropic saturated poroelastic media and that of transversely isotropic saturated poroelastic media.

其次，基于Biot波动理论，在圆柱坐标系下求解了横观各向同性饱和土的Biot波动方程：通过引入位移函数，在圆柱坐标系下将横观各向同性饱和土的Biot波动方程转化为两个解耦的6阶和2阶控制方程，然后根据方位角的Fourier展开和径向Hankel变换，求解波动方程，得到以土骨架位移和孔隙水压力为基本未知量的积分形式一般解，并用一般解给出了饱和土总应力分量的表达式；再以基本解为基础，系统地研究了横观各向同性饱和半空间体的Lamb问题，考虑表面排水或不排水两种情况后，首次得到横观各向同性饱和半空间体在表面竖向和水平谐振力作用的下径向、竖向和周向位移的解析解。

The axially symmetric torsion of rigid circular shaft of varying diameter embedded in an elastic half space is studied by line-loaded integral equation method, where the problem is formulated by distributions of fictitions fundamental loads PRCHS (point ring couple in half space) along the axis of symmetry in interval of the shaft and is reduced to a one-dimensional and non-singular Fredholm integral equation of the first kind and is easily solved numerically.

弹性半空间；本文用线载荷积分方程法研究嵌在弹性半空间的刚性变直径圆轴的轴对称扭转。利用将"半空间的点环力偶"这一虚的基本载荷沿对称轴的圆轴区间中分布就能使本问题归结为一个一维的非奇异的Ferdholm第一种积分方程，且很易用数值求解。文中给出刚性圆锥，圆柱，圆锥柱嵌在弹性半空间的扭转的数值计算的例并和他人的已知结果相比较。

Based on the structure of a non-tracking internal-concentrator solar PV-thermal tube collector and the absorber design requirements, the optical design for the compound parabolic concentrator with half cylinder absorber is proposed to improve the solar energy efficiency. Matlab software was used for the optimization and simulation of the concentrator curve and shape. The curve equation of concentrator for maximum incidence of light of the collector was obtained; and the installation locations for CPC/half cylinder absorber and the necessary CNC processing parameters were optimized.

针对非跟踪内聚光光电－光热复合管的结构及接收器的设计需求，对管内具有特殊形状的半圆柱接收器的复合抛物面聚光器进行了光学设计，并利用Matlab软件对聚光器曲线和形状进行了优化与数据仿真，得到了光热复合管能够得到最大入射光的聚光器的曲线方程、安装位置以及供数控机床加工所需的参数，给出了不同入射角的光线和光强分布图，提高了太阳能的利用率。

Bistatic scattering of a perfectly conducting semicylinder is analysed by using a hybrid method.

摘要本文应用混合技术分析了在TE平面波激励下，理想导体半圆柱的双站散射。

The experimental results demonstrate that a 2D packing of isodiametric particles leads to distortional flow due to' microcrystallities', while the quasi-two dimensional arrangement (Q2D) with a thickness of several particle diameters and the three dimensional arrangement (3D) effectively avoid the distortion.

结果表明：二维精确等径球颗粒床具有微晶格效应，因此流动是畸变的；半圆柱仓的三维流动不出现畸变；而第3方向取几个球厚度的拟二维流动也避免了微晶格效应和畸变。

In the field of thermal analysis, combined with the control volume method and the spectral band model, the discrete transfer method is employed to solve the three dimensional transient radiation and conduction heat transfer in the cylinders of nongray semi-transparent media with semi-transparent and opaque surfaces.

在热分析方面，对同时具有半透明和不透明界面、非均匀第二类边界条件及第一和第三类非线性混合边界条件下非灰半透明介质圆柱体内的辐射与导热三维非稳态耦合换热，用离散传递法结合控制容积法和谱带模型进行了求解，得出了某空间光学系统外遮光罩光学窗口内的非稳态温度场。

On the basis of ray optics, the theoretical expressions of the collimated beam by a DHCL are derived, and the numerical results are also given.

本文以光线光学为基础，对双半圆柱透镜准直半导体激光束问题进行了系统分析并给出了数值模拟结果。

The stable winding equations of the elbow torus and cylinder are established according to different geometry, and the winding pattern of the geodesics of torus and semi-geodesics of cylinder are also achieved.

根据微分几何建立弯管的圆环面及圆柱面稳定缠绕方程，给出了圆环面的测地线缠绕解及圆柱面的半测地线缠绕解，并提出了用OpenGL及VC++对所设计的线型进行仿真的具体实现办法。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。