collision free造句怎么写

2、Nonholonomic redundancy and a collision free motion planning method for under-actuated redundant manipulator were studied in this paper aiming at the Space-Robot-Systems.

1、Plasma in space are collision free.

3、On the basis of building forward looking sonar view model and artificial potential model, decision control of AUV is made, objects are searched through grads approach, a collision free path is planed.