查询词典 arc cotangent

If the length of the arc and chord of the initial pair segments is in the range of error permission,the two segments can be determined as the candidate matching pair.

最后应用候选匹配曲线段上曲率的Hausdorff距离来验证曲线段的匹配，如果该距离在一定的容差范围内，则该曲线段匹配。

Third, in processing, the arc length of cutter on the pitch curve was equal to be the length of cutter rotating around its axis in order to guarantee the generating between the pinion cutter and the blank.

第三，在加工过程中，为保证刀具和齿坯之间的范成关系，刀具在齿坯节曲线上滚过的弧长等于刀具绕其自身回转中心转过的弧长。

The calculating formula of parabola and the length of ellipse arc can be found in the old handbook of mathematics, but it is inconvenient to be used in practice, especially, the accurate value is too difficult to get to.

关于抛物线和椭圆弧长的计算公式在数学手册和有关用表中早就可见。但实际上用起来很麻烦，其精确值也较难达到。

It computes wind factors for flight data file, uses differential equations to solve for position and tension vectors as a function of arc length, and uses Runge-Kutta method for integration of ordinary differential equations.

该软件计算用于飞行数据文件的风向因素，使用不同的方程式，比如一个弧线长度函数来解决位置和牵引方向问题，使用 Runge-Kutta 方法解决综合推理差异方程式。

Furthermore, the theory foundation and analysis method are put forward. We use optical extent to analyze the system. The change of optical extent, caused by arc length of light source and reflective bowl attached the light source, is analyzed in detail. Moreover, the light output by optical extent curve of light source with reflector is measured by experiment. Base on the analysis and experiment, four hypothesis are put forward to construct the true model of light source.

文中采用光学扩展量对系统进行评价分析，研究了光源经冷反光碗输出后的光学扩展量以及光源弧长与扩展量之间的关系，并测试了实际光源光学扩展量与能量分布的关系，在实验基础上提出光源模型的四点假设，建立实际体光源模型及冷反光碗模型，使系统的模拟仿真具有最大的可靠性与真实性。

Most pizzas are measured in inches. So, using the pizza with 8 slices, if the length of the crust arc is five-and-a-half inches, how round is your pizza?

大部分披萨都是以英寸来计量，所以拿8块的披萨来举例，如果外壳弧长为5.5英寸，那么披萨的周长是多少？

In this system,arc length of the curve between two points is calculated by Simpson method,and then observer's position and orientation at every frame are deduced by bisection.

通过Simpson法计算两点之间曲线弧长，二分法迭代得到观察者每一帧时所处的视点和视角。

In favour of arc length algorithm, the curve of fix points of balanced rotor to rotor speed, harmonious and subharmonious unbalance reponse curves are given. The Hopf bifurcation of balance rotor is computed by use of extent equation method.

同时应用扩展方程方法计算了平衡转子的Hopf分叉点，并用求得的Hopf分叉点参数进行数字仿真，证明极限环的存在，因此说明Hopf分叉点的计算是正确的。

An incremental-iterative method based on the Newton-Raphson method combined with constant arc length of incremental displacement vector is employed for the solution of nonlinear equilibrium equations.

本文解非线性平衡方程式式的数值计算方法是基於牛顿－拉福森(Newton-Raphson)法配合弧长控制法的增量迭代法。

An incremental-iterative method based on the Newton-Raphson method combined with constant arc length of incremental displacement vector is employed for the solution of nonlinear equilibrium equations. The subspace iterative method is used for the solution of natural frequencies and vibration modes for the free vibration of beam structures.

本研究推导元素的节点惯性力时，先将元素扰动位移表示成当前固定元素座标的扰动位移和旋转之函数，故可直接求得元素的节点惯性力，元素的一致性质量矩阵可由元素节点的惯性力对元素节点的加速度微分求得。

Dixie itself is a nickname for the American South.

Dixie 本身是美国南部的别称。

I think John Terry epitomises that and a big reaction is what we will be looking for.

而我认为特里就是这样一个典型，他正是我们期望看到的那个领秀。