一些人需要复习一点数学课程，正弦的作用是给出在一个直角三角形中的一个已知角所对应的一条边与直角三角形斜边之间的比率。
For anyone that needs a little refresher course, the sine function gives the ratio of the opposite side of a given Angle in a right triangle to the hypotenuse.
同时，建立了反余弦一波正弦形缓和曲线的设置方法和计算公式。
This article puts foward a "Secant One—wave Sine—shaped Transition Curve", whose deflection angles are of secant varlation.
该装置不仅适用于不同规格的正弦形波纹式橡胶套而且适用于左(右)旋螺纹式橡胶套的生产，适用面较广。
The facility is widely applied rubber case production for either sine corrugated rubber case production or left (right) spiral rubber case production.
采用基于N - S方程的CFD方法，研究矩形、斜面台阶形、圆弧形、三角形、多圆弧形以及正弦形织构表面的动压润滑性能。
The hydrodynamic lubrication performance of rectangle, inclined plane, circular-arc, triangle, multi-arc and sine surface texture was researched with CFD method based on N-S equation.
由功率四边形进一步确立了非正弦交流电路中的电流四边形和导纳四边形，以及它们和功率四边形的相似关系。
Further, the current quadrilateral and admittance quadrilateral, as well as their similarity to the power quadrilateral in non-sinusoidal alternating-current circuits were derived.
从双口网络的Z参数、Y参数出发，推导了星形、三角形网络转换在正弦稳态电路中的转换公式，引出其应用条件。
In this paper, starting from the conversion of Z parameters and Y parameters of two-port parameters, we deduce the formulas of wye-delta network transformation in sinusoidal steady-state.
对该凸轮机构采用正弦曲线的形封闭误差和运动传递误差进行了理论分析。
Adopting the form closure error and the motion transmission error of sine curve to carrying out theoretical analysis of this CAM mechanism.
利用平面三角形的正弦定理，提出一种已知准确船位后的单物标两方位移线定位的计算方法。
This paper presents a method of calculating a running fix with two bearings form one object.
然后运用脉冲功率技术，通过由电容器和磁开关等组成的脉冲陡化电路对正弦电压波形进行改形，最后输出纳秒级上升前沿、高重复频率的高压脉冲。
Then, transform it through the pulse sharpening circuit consisting mainly of capacitances and magnetic switches, finally outputting the high voltage and high repetition rate nanosecond pulses.
文中建立的正弦形扁拱跳跃屈曲突变模型可以清晰地阐明扁拱失稳的物理意义。
In this paper, a catastrophe model of sine flat arch jumping bend is established.
正、余弦定理的几点应用摘要正弦定理和余弦定理是三角形边角关系及三角函数种最常见、最主要的两个定理。
Sine and Cosine is the triangular relationship between the corners and trigonometric functions of the most common, the two most important theorems.
本文根据任意槽形金属光栅的矢量模式理论，对正弦槽光栅和半椭圆槽光栅的情况进行了推导和数值计算。
According to the vector modal theory for any shape profile metallic grating, the diffraction fields are studied numerically.
摘要：基于有限电导率光栅的微分理论，对工作在紫外光区的全息正弦光栅和三角槽形光栅的衍射效率做了数值计算。
Abstract: Diffraction efficiency of Al-coated triangle and holographic sinusoidal grating used in UV region are calculated using the differential formalism of exact electromagnetic theory.
摘要：基于有限电导率光栅的微分理论，对工作在紫外光区的全息正弦光栅和三角槽形光栅的衍射效率做了数值计算。
Abstract: Diffraction efficiency of Al-coated triangle and holographic sinusoidal grating used in UV region are calculated using the differential formalism of exact electromagnetic theory.
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