大家都搜:
[数]极面
1、amphitrichous polar───两性极性
2、polar molecules───有极分子
3、polar hippos───极地河马
4、polar───n.(Polar)人名;(德、西)波拉尔;n.极面;极线;adj.极地的;两极的;正好相反的
5、polar circle───[数]极圆;[天][测]极圈
6、polar beat───极拍
7、plane───vt.刨平;用刨子刨;掠过水面;n.飞机;平面;程度,水平;n.(Plane)人名;(塞、瑞典、法)普拉内;vi.刨;乘飞机旅行;翱翔;adj.平的;平面的
8、polar coordinates───n.极坐标;n.[数][天]极坐标
9、polar post───极柱
1、A rare galaxy type, polar ring galaxies have a substantial population of stars, gas, and dust orbiting in rings nearly perpendicular to the plane of the galactic disk.───极环星系是种稀有的星系类型,它们有着几乎和银盘平面垂直,呈环形公转的大量的恒星、气体和星尘。
2、that polar coordinates are about replacing x and y as coordinates for a point on a plane by instead r, r and theta,which is the angle measured counterclockwise from the positive x-axis.───极坐标是关于r,θ的,用r,θ代替平面上一点的x,y坐标,是从原点到那一点的距离,,which,is,the,distance,from,the,origin,to,a,point,θ是由x轴逆时针旋转,而得到的夹角。
3、So the idea of spherical coordinate is you're going to polar coordinates again in the rz plane.───所以说球坐标系,其实就是在rz平面再建立一个极坐标。