单词	Cartesian coordinates
释义	Cartesian coordinates A system used in analytical geometry to locate a point P, with reference to two or three axes (see graphs). In a two-dimensional system the vertical axis is the y-axis and the horizontal axis is the x-axis. The point at which the axes intersect each other is called the origin , O. Values of y 0 fall on the y-axis below the origin, values of x <0 fall on the x-axis to the left of the origin. Any point P is located by its perpendicular distances from the two axes. The distance from the x-axis is called the ordinate ; the distance from the y-axis is the abscissa . The position is indicated numerically by enclosing the values of the abscissa and the ordinate in parentheses and separating the two by means of a comma, e.g. (x,y). In three dimensions the system can be used to locate a point with reference to a third, z-axis. It is named after René Descartes (1596–1650). Cartesian coordinates
随便看	crystal lattice crystal microphone crystal oscillator crystal pick-up crystal structure crystal system crystallography crystalloids CT scanner cubic crystal cubic equation cubic expansivity curie Curie point Curie's law Curie, Marie curium curl current current balance current density cusp cycle cycloid cyclotron

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。