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三角函数

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Exponential and trigonometric Functions: read Chapter 2 and do exercises.

指数和三角函数:阅读第二章以及做练习题。

Including Date/Time, Math, Statistical, String and Trigonometric functions.

包括日期/时间,数学,统计,弦乐和三角函数

Thirdly, a set of generalized trigonometric functions in the triangular domain are constructed.

第三,构造出了三角区域的广义三角函数

The mathematics of triangles and trigonometric functions.

三角形与三角函数的数学。

A function description method of synergies among the human joints was proposed by using trigonometric and exponential functions.

利用三角函数和指数函数,建立了人体关节角度之间协调元的函数描述方法。

Vector is one of the important and basic concepts in modern mathematics. It is also a tool that links up algebra, geometry, and trigonometric.

向量是现代数学中重要和基本的数学概念之一,它是沟通代数、几何与三角函数的一种工具,有着极其丰富的应用背景。

I never did understand trigonometry, and I still don';t.

我一向不懂三角函数,现在仍然不懂。

By means of the undetermined coefficient method ,which is submitted in reference for solving nonlinear wave equations for their peaked soliton solutions ,three kinds of peaked soliton solutions are obtained for two important nonlinear wave equations— Korteweg-de Vries equation and Benjamin-Bona-Mahonyequation,respectively. One kind of peaked compacton solution ,which has the characteristics of both peaked soliton solution and compacton solution ,is obtained for above two equations with the aid of transformation relation between triangle function and hyperbolic function,. By use of above solutions, two kinds of periodic peaked traveling wave solutions are constructed.

摘 要:利用文献中提出的求非线性波方程尖峰孤子解的方法,分别求解了两个重要的非线性波方程—Korteweg-de Vries 方程和Benjamin-Bona-Mahony BBM)方程,得到了3类尖峰孤子解;借助双曲函数与三角函数间的变换关系得到了1类尖峰紧孤子解,该型解兼有尖峰孤子解和紧孤子解的特点;在上述结果的基础上构造了2个周期性的尖峰行波解。

The feedback controls, including linear, speed, doubly-periodic function, hyperbolic function and trigonometric function are used to suppress chaos to one of the three unstable equilibrium. The Routh-Hurwtiz theorem is applied to derive the conditions of stability of the controlled system.

利用反馈控制方法,包括线性、速度、双周期函数、双曲函数和三角函数反馈控制方法将系统的混沌运动控制到稳定态,根据Routh-Huriwtz准则获得了系统达到控制目标时反馈系数所满足的条件。

Based on the stress analysis to spired axis mechanism,in the aspect of sliding part which smoothes through alveolus intersection, theresearch of parameters optimization, about the middle alveolus of spired axis andthe dimension of sliding part, has been studied. To the problem that the reverseportion at the both sides of spired axis lashed fiercely and fraies quickly, thearticle finely analyses the best curve of alveolus when adding cushiony spring atthe both sides.

在对螺旋轴机构进行受力分析的基础上,从滑块顺利通过齿槽交叉点的要求方面,对螺旋轴中间段齿槽和滑块的尺寸进行了参数优化分析;针对螺旋轴两端曲线齿槽反向段在高速工作时冲击大、磨损快的问题;从减少滑块在齿槽反向段运动的冲击方面,比较分析了圆弧、抛物线、三角函数等曲线作为螺旋轴齿槽反向段曲线的加速度,提出了较优的(来源:ABCab论bf文网www.abclunwen.com)反向段曲线。

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推荐网络例句

I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。