正弦

Sine law of spherical trigonometry spherical trigonometry Vector Proof of sine law of the vector method of proof.

球面三角学正弦定律的向量证明方法球面三角学正弦定律的向量证明方法。

The use of sinusoidal functions of the AD9851 and the frequency of sine wave is adjustable.

详细说明：利用AD9851的功能产生正弦波并且正弦波的频率是可调的。

We have both true sine wave and quasi sine wave types.

我们有正弦波和准正弦波两种类型。

Focusing properties of elegant cosh square Gaussian and Sinh square Gaussian beams through a thin lens are studied in detail. And intensity distribution on the axis and focusing intensity distribution are analyzed. Also focal shift of Sinh square Gaussian beams are studied.

详细研究了复宗量双曲余弦平方-高斯光束和双曲正弦平方-高斯光束通过薄透镜时的聚焦特性，分析了光束的轴上光强分布和聚焦场的光强分布，讨论了双曲正弦平方-高斯光束的焦移。

The physical meaning of apparent power and reactive power is studied and analyzed though they are reasonably defined in sinusoid al conditions.

虽然在正弦情况下，视在功率、无功功率都得到合理的定义，但指出即使在正弦情况下，其传统的物理意义是令人费解和误导的。

VHDL using written natural sampling SPWM, there are sine table, you can enter through the external sinusoidal and triangular wave frequency.

详细说明： VHDL采用自然采样法写的SPWM，里面有正弦表，可以通过外接输入正弦波和三角波的频率。

Example The periodic function shown in the Fig. is known as a half-wave rectified sine wave. Find the trigonometric Fourier series of the function f.

角频率为横坐标，每个正弦分量(直流分量相当于频率为零的正弦量)的大小为离散的纵坐标值

In order to decrease the measuring error of signal processing in laser Doppler velocimeter,frequency spectrum correction methods for laser Doppler signal were proposed.

在激光多普勒测速仪中，为了减小由信号处理算法带来的测量误差，提出运用频谱校正算法对多普勒信号的频谱进行校正，详细阐述了能量重心法、比值法和相位差法3种离散频谱校正算法的基本原理，运用这3种算法对理想正弦信号进行仿真，并运用比值法对信号施加不同频率和信噪比的噪音下的正弦信号和实测的多普勒信号进行仿真及实验研究。

In the end, based on linear assumption, the simulation algorithm of the sine-scan vibration test was presented and the simulation was carried out on the updated modal of vibration generator.

最后，在线性假设的基础上给出了正弦扫描试验仿真的数值算法，并对修正后的模型进行了正弦扫描试验仿真研究。

In this thesis, algorithms and hardware implementations are studied on the vocoder system based on the Sinusoidal Model. After combining the phonetic classification algorithm with the Sinusoidal Model and taking advantage of the speech properties in Mandarin, good results are achieved.

本文对基于正弦模型的声码器系统从算法和硬件实现两方面进行了研究，将分类算法与正弦模型相结合，并利用汉语的语言特点，取得了比较理想的结果。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。