查询词典 spherical coordinates

Based on the selection rules on the rotational joint fit comer, spherical joint fit comer and parallel bar interference, which are application-based, the relationships between those restrictions and mechanism parameters are deduced in the mathematic functions, especially for the compound spherical joint.

文章摘要：以6-RSS型并联机构为研究对象，建立解析形式的反向运动学方程，给出考虑驱动副转角范围、球副转角范围、连杆干涉等约束条件时的反解选取准则，推导出每种约束表达与机构参数间关系，特别是复合球副独特的附加约束表达。

By the lower spherical density, we calculate the packing measure of the self-similar sets. In this thesis, we get a relation between the packing measure and the lower spherical density.

对于填充测度的计算，本文从下球密度入手，在下球密度与填充测度之间建立了一个等式。

Firstly, based on the basic theory of GRIN optics the optical effects of the spherical symmetry GRIN micro-sphere lens were analyzed systematically. Firstly, based on the basic theory of GRIN optics the optical effects of the spherical symmetry GRIN micro-sphere lens were analyzed systematically.

本工作从梯度折射率介质光学的基本理论出发，对球对称GRIN微球透镜的光学性能进行了系统的分析；研究了用球对称GRIN微球制作回归反射材料的可能；进而选择两种聚合物单体，采用悬浮扩散共聚法，研究制备了较大粒径的聚合物梯度折射率微球透镜。

We take the spherical harmonic functions as base functions on the spherical surface and other systems of orthogonal functions as base functions in the direction of radius. However.

据此，我们可以在球面上以球面调和函数为基函数而在半径方向以其它适当的正交函数系为基函数，从而构成一种混合谱方法。

Models of pentahedron, hemisphere, spherical cap quantum dots as well as the combinations of the quantum dots of plane, pentahedron and spherical cap are set up.

建立金红石TiO_2(001)面五面体形状量子点、半球形状量子点、球缺形状量子点以及平面、五面体和球缺组合形状量子点的点阵模型。

SEM observation of the earliest skeletal fossils from the late Sinian Dengying Formation in southern Shaanxi, China indicates that the tube wall of Sinotubulites levis is encrusted by phosphate spherical and filamentous structure, possibly reflecting microbially mediated phosphatization of tube wall. Three preservational microfabrics detected, namely mat-like structure formed by intertwining of rigid filaments, densely packed spheres with a distinctive framboidal external surface and hollow centers and tightly packed spherical bodies with extremely smooth external surface, may refer to different types of mineralized cyanopytes.

陕南晚震旦世高家山生物群中骨骼化石的电镜扫描显示，Sinotubulites levis壳壁中具有丰富的磷酸盐化球状和丝状体，可分为3种不同类型的微生物组构：1由相互缠绕的丝状体所组成的藻席状组构；2由外表面成莓球状，内部中空的球状体紧密堆叠所形成的组构类型；3由表面极为光滑的球状体堆叠所形成的组构。

Compilation of the plane trigonometry and spherical trigonometry book, spherical trigonometry to solve some problems in, and first proposed the introduction of auxiliary ...

编撰了有关平面三角学和球面三角学的著作，解决了球面三角学中的若干难题，并首先提出引进辅助。。。

Vesic's solutions to cavity expansion that include cylindrical cavity expansion and spherical cavity expansion are introduced. Then cylindrical cavity expansion theory is applied to study compaction effect of pile driving in saturated soil. Based on the results of conventional triaxial tests, a trilinear curve model is used to simulate stress-strain curve of strain-softening materials. Meanwhile, trilinear curves are also used to simulate curves of volumetric strain, minor principal strain and major principal strain. By using elasto-plastic theory, analytical solutions to cylindrical cavity expansion in strain-softening soil are presented. According to the mechanism of statically pressed pile driving, compaction effect of pile tip can be viewed as hemispheric cavity expansion. Therefore spherical cavity expansion theory is applied to obtain the solutions to stress, strain, displacement fields and final pressure. Resistance force of pile tip is calculated to estimate static pressure.

介绍了Vesic关于圆孔扩张问题的解答，其中包括柱形孔扩张问题和球形孔扩张问题，并应用柱形孔扩张理论分析了饱和软土中的沉桩挤土效应问题；在常规三轴试验成果的基础上，采用三折线模型模拟具有应变软化性质的岩土材料的应力应变关系曲线，分析了在应变软化土体中沉桩时桩周土的位移场、应力场和应变场的变化，得到了解析解答；分析了静压桩的沉桩机理，并利用球形孔扩张理论，视桩端处的挤土为半个球形孔的扩张，分析了桩端处土的位移场、应力场和应变场的变化，并根据最终扩张压力计算出沉桩时的桩端阻力，可作为压桩力的估算。

Among these particles, the prismy crystals and regular cubic crystals were specifically identified as sulfates of Ca and NaCl from sea salt respectively. But the spherical, fractal and sheet-like particles have very diverse compositions. b The composition of fractal particles is the most complicated, and that of spherical ones is less complex.

其中，棱柱形长棒晶粒和规则的立方形晶粒具有特定的组成，分别为钙的硫酸盐和来自海洋的NaCl晶体，而球形、块状和片状颗粒元素组成变化较大。b块状颗粒的化学成分最为复杂，球形颗粒其次。

Like self-aligning ball bearings and spherical roller bearings, they are provided with a spherical outer-ring raceway.

像自调心球轴承和球面滚子轴承，他们提供了一个球形外圈滚道。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"