Bearing: in machine construction, a connector (usually a support) that permits the connected members to rotate or to move in a straightline relative to one another.
轴承：在机器结构中，允许被连接件彼此相对转动或作直线运动的连接器(通常为支撑物)。
2
Draw a straightline realize, round, rectangular and arbitrary graffiti function, brushes, rubber size variable, support for color palettes.
实现绘制直线、圆、矩形及任意涂鸦功能，画笔、橡皮大小可变，支持调色板。
3
X-shaft guide rail applies the support structure of two guide rails, selects imported heavy-duty roller straight-line guide rail, and has various heavy load-bearing sliding blocks.