Cocos Creator
Limit Velocity Overtime Module 
The speed limit module is used to set the speed of the particles to gradually slow down over the life cycle.

| Property | Features | 
|---|---|
| space | In which coordinate system the speed is calculated. | 
| limit | Lower speed limit. When the speed exceeds this value, the current speed is linearly interpolated with this speed. It is valid when separateAxes is false. | 
| dampen | Interpolation of current speed and lower speed limit. | 
| separateAxes | Whether the three axes are restricted separately. | 
| limit X,Y,Z | The lower speed limits of the three axes are valid when separateAxes is true. | 
