“second quadrant”的概念、定义、翻译、参考文献-科学参考

单词	second quadrant
释义	second quadrant [`sek·ǝnd `kwä·drǝnt] ^MATHEMATICS 1. The range of angles from 90 to 180°. 2. In a plane with a system of cartesian coordinates, the region in which the x coordinate is negative and the y coordinate is positive.
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