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- This paper is about that making and using of right angle coordinate system in teaching directions for feed producing. 本文介绍了直角坐标系统在猪、鸡饲料配方教学中的制作、使用及其原理。
- Natural coordinate system and right angle coordinate system are equivalent when Newton law of motion is used in the dynamics problems of curve motion of a particle. 摘要质点曲线运动的动力学问题，在运用牛顿定律解题时，既可选用直角坐标系，又可选用自然坐标系。
- spatial right angle coordination system 空间直角坐标系
- right angle coordinate system 直角坐标系
- Study on non- linear coordination conversion of space right angle coordination system 浅谈空间直角坐标系非线性坐标转换
- Abstract Number axis,plane right angle coordinate and space right angle coordinate in maths are the "numbers"of concret. 数学中的数轴、平面直角坐标系、空间直角坐标系为形而下之数 ;
- reading technique with right angled coordinate 直角坐标查图方法
- Study of the Form of Combination Graph's Composition Under Oblique and Circuit Angle Coordinate System 斜角坐标系与周角坐标系组合构图形式研究
- One line cuts another at right angles. 一条线与另一条线成直角相交。
- right angle coordinate equation 直角坐标方程
- Standard units and coordinate system. 标准单位和坐标系。
- The origin in a polar coordinate system;the vertex of a polar angle. 极点一个极坐标系中的始端；一个极角的顶点
- Right Angle Coordinate Equation and Polar Coordinates Equation Surnamein Melting Mutually Solve the Nature Problem 直角坐标方程与极坐标方程互化中的同解性问题
- The origin in a polar coordinate system; the vertex of a polar angle. 极点一个极坐标系中的始端；一个极角的顶点
- An angle in a semicircle is a right angle. 半圆所对的圆周角是直角。
- A four-sided plane figure with four right angles. 矩形，长方形具有四个边的方形，有四个直角
- At right angles to a vertical line. 横的与垂直线成90度角的
- This coordinate system is called the triad at the point. 这个坐标系叫做该点的三面形坐标系。
- A right triangle has a right angle. 直角三角形有一个角是直角。
- It forms a right angle with the equator. 它与赤道成直角。
