说明：一款很漂亮的圆盘形的菜单，实现重力滑动，点击等。
A very nice disc-shaped menu, realize the gravity slide, click, etc.
若有个疯狂物体，我无法提供给你们，我给你们的将是方形，或者圆盘形的物体，但它必须是薄盘子。
If you have some kind of a crazy object; which of course we will never give you; we'll always give you a square or we'll give you a disk But it has to be a thin plate.
进口蝶阀是指通过阀轴旋转来带动一个圆盘形的蝶板的转动，达到开启与关闭的一种阀门，在管道上主要起切断和节流用。
Butterfly valve through the valve shaft rotation to drive the rotation of a disc-shaped disc, to open and close a valve, cut off from the main pipe and throttle with.
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