1·That is a property of the circle that the radial direction is perpendicular to the circle. Actually, let me complete this picture.
这不过是圆的性质——径向垂直于圆，我来画完这张图吧。
2·Four row circular cone roller bearings its performance and double row circular cone roller bearings basic same but may withstand the bigger radial direction load and the two axle to the load.
四列圆锥滚子轴承其性能与双列圆锥滚子轴承基本相同，但可承受更大的径向载荷和双轴向载荷。
3·When programming with incremental value, in radial direction, the displacement of two times the actual value, and the enclosed said direction signs (omit the positive).
用增量值编程时，以径向实际位移量的二倍值表示，并附上方向符号(正向可以省略)。
4·This paper introduces the structure principle of parallel gear pump in plane, analyses the hydraulic forces and mesh forces in radial direction of driving and driven gear.
介绍了平面式并联齿轮泵的结构原理，对主从动齿轮的液压径向力，啮合力分别进行了分析。
5·The other is the 'Z' shape inspection along the radial direction.
另一种方式是沿径向呈“Z”字形进行扫查。