正弦曲线

Solving sine function of the curve length, see Chuan was a similar, but I think this version is better.

详细说明：求解正弦函数的曲线长度，看到有人传过一个相似的，但是我觉得这个版本比较好。

A field-circuit approach for accurate prediction of thesteady-state performance of squirrel cage induction motor is presented. The method is based on two-dimensional complex nonlinear eddy-current solution with the use of effective reluctivity.

基于电机二维非线性正弦涡流场有限元计算及有效磁化曲线的等效，用场路结合的方法分析电机的特性，考虑了集肤效应和铁心饱和对电机参数的影响。

Let's now examine the simplest wave from where the profile is a sine or co sine curve.

现在让我们来考察最简单的波形，它的剖面图是正弦或余弦曲线。

Daily thermal effectiveness was expressed as a sine curve integrating daily temperature effect and temperature sensitivity in relation to wheat development.

每日热效应是指受每日温度和品种温度敏感性影响的生育促进因子，其中温度效应用正弦函数来表达，而曲线的陡度用温度敏感性来调节。

Sine wave parameters of law;Dielectric loss angle; FFT; Curve fitting; Digital measurement

中文关键词：正弦波参数法；介质损耗角； FFT；曲线拟合；数字化测量

This paper applies Fourier series to detach the fundamental waves phase, adopts the curve fitting to the frequency of the maximum spectrum amplitude, utilizes the sine wave parameters of law to the phase angle of this frequency, calculates δvalue and tanδvalue.

本文以傅立叶级数分离基波相位的方法为依据，通过曲线拟合求频谱幅值最大值处的频率，利用正弦波参数法求该频率处的相位角，从而计算出δ值和tanδ值。

Considered the factor of damping,a single degree of freedom s dynamic model of the high-speed cam mechanism is established.Choosing the law of sine acceleration motion as the excitation function,a displacement and acceleration dynamic response equations of the main vibration phase and residual vibration phase,the working dynamic response change curve through the inferential reasoning working end movement equation is derived.The result is obtained that different period and damping ratio have different impact

建立了考虑阻尼因素的等效单自由度高速凸轮机构的动力学模型，以正弦加速度运动规律方程为激振函数，推导出了从动件系统主振段和余振段的位移和加速度动态响应方程并绘制出了动态响应变化曲线，得出了不同阻尼比和周期比对主振段和余振段的动态响应，从而为高速凸轮机构的合理设计提供了一定的理论依据。

With this method, we had several important differences compared to the YDmodel. First, the ratio of daily increment of PDT and the deficit of both water and nitrogen was used to estimate the effect of environment. Second, a nonlinear function was adopted to describe vernalization and thermal effectiveness (instead of three-stage linear function). Third, sinusoidal function was used to describe photoperiod curve cluster for different cultivars.

本模型在YDmodel基础上的改进主要有3点：（1）将每日生理发育时间的增量乘以水肥丰缺因子，改为除以水肥丰缺因子表现水肥对大麦发育的影响，客观体现了大麦在水肥丰缺条件下的发育延迟或提早现象；（2）将三段线性函数改为非线性函数表达春化效应和相对热效应，确立了不同品种相对春化效应和相对热效应的曲线族；（3）将线性函数改为正弦函数表达不同品种光周期效应。

Tangent sine function with the function, structure and the cosine function linear structure, The results showed tangent curve smoothing function fitting, bending loss smaller, more optimization of the optical path.

正切函数与正弦函数、余弦函数结构以及直线结构进行比较，结果表明正切函数拟合曲线平滑，弯曲损耗较小，更优化了光路径。

Advantech PCI-1720 applications, applied to two channels of simultaneous output of sine and cosine curves to form a circle.

详细说明：研华PCI-1720应用程序，应用在两个通道同步输出正弦和余弦曲线，组成圆形。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。