方向余弦

The voltage induced in series with the loop is proportional to the area and the cosine of its angle to the field.

回路感生电压的大小与回路面积以及回路与磁场方向夹角的余弦成正比。

In this paper, we introduce and modify the interangular cosine similarity coefficient, analogy with the concept in multivariate statistical analysis. The similarities are described quantitatively.

本文引入并改造了多元统计分析中的夹角余弦相似系数，对图像多分辨分解中同一方向各高频子图之间的相似性进行了定量的描述。

The nine elements of the matrix are products of cosines of angles between the direction of a streamline at a point and the coordinate axis.

这矩阵的9个元素系一点的流线方向和座标轴之间夹角余弦的乘积。

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。