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.

轴导轨采用两条导轨支撑结构，并选用进口重载滚柱直线导轨，密布多个高承重滑块。

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Bearing: in machine construction, a connector (usually a support) that permits the connected members to rotate or to move in a straight line 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)。

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Draw a straight line 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。

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