METHODS Chromatogram can be treated as vector of hyperspace, and the similarity between them can be counted according to vectorial angle formula.
方法将色谱指纹图谱看作多维空间内的向量，利用向量夹角余弦的基本公式计算两个指纹图谱间的相似度；
Secondly, the optimum dip angle formula, which makes total length of the cables to be the shortest under the condition of obtaining the same anti-sliding effectiveness, is deduced.
推导了在获得相同抗滑效果的前提下，使得锚索长度最短的最优锚固角公式；
Well, using, again, the double Angle formula.
再次利用二倍角公式。
In this paper, the nip Angle formula between hybrid orbitals is introduced.
介绍了杂化轨道间夹角公式。
Double Angle formula can transform the circular function equation to a biquadratic algebraic equation, and the analysis solution can be solved by extract equation directly.
用倍角公式可将该三角函数方程转化成一个四次代数方程，然后用求根公式直接求出解析解。
Making use of the points measured on the drum helical curve of concrete-mixer truck, the helical Angle formula of the helical curve is obtained by means of least square method.
利用测得的混凝土搅拌车拌桶螺旋线上的一组离散点，通过最小二乘法拟合出了求解拌桶螺旋线螺旋角的公式。
With cylindrical coordination, this paper establishes the contour surface equations and pressure Angle formula of the conical grooved CAM with translating conical roller follower.
借助柱面坐标，建立了圆锥滚子直动从动件圆锥槽凸轮的廓面方程和压力角公式。
This paper establishes the contour surface equation of a torus CAM and presents a pressure Angle formula, it provides a simple and efficient method for designing this kind of cams.
建立了环面凸轮轮廓曲面的解析方程，同时给出了压力角计算式，为此种凸轮的设计提供了一种简单有效的方法。
For the problem of detonation driving plate, if some quantities could be gained from theories or experiments, we can deduce the projection Angle formula from the projection Angle equation.
对于爆轰驱动平板问题，当理论近似或实验拟合给出某些物理量后，可以借助抛射角方程导出适用的抛射角公式。
For the problem of detonation driving plate, if some quantities could be gained from theories or experiments, we can deduce the projection Angle formula from the projection Angle equation.
对于爆轰驱动平板问题，当理论近似或实验拟合给出某些物理量后，可以借助抛射角方程导出适用的抛射角公式。
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