针对基于向量夹角余弦准则下组合预测模型，研究它的基本结构特征。
In this paper, the basic structural characteristics of combination forecasting model is studied under the criterion of vectorial Angle cosine.
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；
METHODS Chromatogram can be treated as vector of hyperspace, and the similarity between them can be counted according to vectorial angle formula.
将HPLC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。
HPLC curves was treated as vector of hyperspace, the similarity between them was calculated by using the cosine value of the Angle between them.
特别地，能得到α角的余弦值，我们知道如何找两向量的夹角。
In particular,cosine of alpha,I can get, well, we know how to find the angle between two vectors.
在方位向量和,之间，有一个夹角;,我们叫它φ
v0 And there is an angle between ; the position vector and v zero; 0 I call that phi zero.
记住两个平面之间的夹角和，两个法向量之间的夹角是一样的。
Remember, the Angle between two planes is the same thing as the Angle between the normal vectors.
运用输入输出轴两轴线的向量叉积求出了联轴器夹角方程序。
And then, the expression of the fluctuation of the joint Angle was derived from the cross product of the centerlines of the input and output shafts.
运用输入输出轴两轴线的向量叉积求出了联轴器夹角方程序。
And then, the expression of the fluctuation of the joint Angle was derived from the cross product of the centerlines of the input and output shafts.
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