“direction cosine”的概念、定义、翻译、参考文献-科学参考

单词	direction cosine
释义	direction cosine [dǝ`rek·shǝn `kō´sīn] ^ENGINEERING In tracking, the cosine of the angle between a baseline and the line connecting the center of the baseline with the target. ^MATHEMATICS The cosine of one of the direction angles of a line in space.
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