查询词典 double angle formulas

The result shows the theoretical formulas are suitable to the penstocks with any distance between rings and can be regarded as the general formulas for the structure analysis on stiffened penstocks.The stiffness coefficient and the equivalent flange are the function of the ring distances.

结果表明，本文的理论公式适用于任何间距的加劲钢管，为加劲压力钢管结构分析的通用公式；加劲环的刚度系数和等效翼缘为其间距的函数，这些新结论是对现行压力钢管设计规范的补充和完善。

In this paper, the principle and formulas to evaluate the stability of slopes with ground water are introduced,the equilibriumfunctions of element have been derived consideringthe influence of the pore pressure, and the formulas of water pressure on boundaries of element are also discussed.

摘 要：讨论了地下水作用边坡稳定性分析的运动单元法基本原理与公式，推导了有孔隙水压力影响的单元静力平衡方程和单元边界水压力的计算式。

Firstly, the formulas of continuous profile curves are educed from the formulas of the cutter profile curves, so the profile of helical gears can be fast and accurately created.

修形技术对提高齿轮箱传动性能有重要意义，而齿面偏差和轴线偏差是对齿轮强度产生影响的误差因素。

"From the primitive symbols, certain formulas are defined as well formed, some of which are listed as axioms; and rules are stated for infer ring one formula as a conclusion from one or more other formulas taken as premises."

公式即基设符号所形成的一种良构表式，其中一部分被列为公理；推演规则被用来从一个或多个作为前提的公式推演出一个作为结论的公式。

According to the anatomic structure of joints,the simulation formulas are presented,and they coincide with the motion characteristics of knee joint and muscles.In the final experiment,a proper selected lattice space and these formulas yield a good visual effect of simulation.

实验证明，采用适当的自由变形网格，利用推导的公式能够获得较好的膝关节弯曲和肌肉变形视觉效果。

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最新消息：2008年的一项研究显示，那些经常神经紧张的人士服用了磷脂酰丝氨酸后，以脑电波衡量的数据显示出精神受压力的程度大为放松。

First, based on Huygens' principle, formulas for double refraction and internal double reflection with different directions of propagation vector and wave vector are given.

虽然对晶体的双折射效应已有大量的研究，但都只关注于单个界面上的双折射双反射，没有适用于多个界面的连续双折射双反射的情况。

In 2002, Kou proposed double exponential jump diffusion model, the most important is that double exponential jump diffusion model can generates a highly skewed and leptokurtic distribution, in addition, DEJD leads to tractable analysis pricing formulas for European and path-dependent options.

在2002年，Kou提出了双指数跳扩散模型，该模型最主要的特点就是能产生一个尖峰厚尾分布，更重要的是在双指数跳扩散模型下能给出易处理的欧式期权和奇异期权的解析定价公式。

A Study on Fraunhofer Double-Slit Diffraction by Applying Simulation Technology;2. Based on Kirchhoffs theory,the approximate intensity formulas of double-slit diffraction of Gaussian Beam is derived under paraxial approximation with power series expansion methods.

依据基尔霍夫衍射理论，利用幂级数展开的方法推导出旁轴条件下高斯光束双缝衍射的近似光强计算公式，并通过数值计算对双缝衍射的基本特性进行了讨论，得出了与其他文献一致的结论，得出了高斯光束下的双缝衍射极小值点比平行光束双缝衍射的极小值点向外移，观察屏中心光能变小；光强分布可由激光斑在衍射屏处的参数调制的结论。

The Double-base Teaching is one of traditional features in the mathematics" education in our country, which focuses on how to cultivate the students" inquiry ability in the daily teaching. First of all, from the beginning of the double-base teaching, we pay attention to the original knowledge during the teaching of concepts, definitions, theorems and formulas. In the case of exercising lessons, we conclude, summarize and train the student"s emanative ideations. In the review lessons, we care about the interconnections of various knowledge. Next, because theopen subjects have the better functions to be researched, we create them in the daily teaching. It is also a very important approach to cultivate the students" inquiry ability.

重视双基教学是我国中学数学教学的传统特色，在日常教学中培养学生的探究能力，应首先从双基教学开始：在概念、定义、定理、公式的教学中注重知识的起源；在例习题教学中，注重归纳、小结及训练学生的发散思维能力；在复习课的教学中注重各知识的相互联系；其次，由于数学开放题具有良好的探究功能，因此，在日常教学中适当创设数学开放题，也是培养学生探究能力的一个重要途径。

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。"