“directrix”的概念、定义、翻译、参考文献-科学参考

单词	directrix
释义	directrix Physics 1. A plane curve defining the base of a cone. 2. A straight line from which the distance to any point on a conic is in a constant ratio to the distance from that point to the focus. Mathematics See conic, ellipse, hyperbola, parabola.
随便看	social mobility table social network social network service social opportunity cost social optimum social overhead capital social philosophy social physics social planner social polarization social purpose company social reproduction social returns to education social safety net social science, philosophy of Social Security Act social security benefits social security contributions social services social software social space social statistics social time preference social welfare social welfare function

科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。