four degrees of freedom

基本解释

Describes a picking dynamic model of four degrees of freedom for medium picking motion on K251 silk loom.
建立了K251型丝织机的中投梭机构四自由度击梭动力模型。
The biggest upgrades from the original Robonaut are R2's thumb, which now have four degrees of freedom (as opposed to three), and its overall speed, which have improved by a factor of four.
相比原始的机器宇航员，R2最大的升级是拇指和整体速度；现在的拇指具有四个自由度（之前只有三个），同时速度通过四个因素进行了提升。
The paper introduces kinematics modeling for a kind of four degrees of freedom robot and gains the robots forward kinematics and inverse kinematics by using a simplified method based on this.
讨论了一种四自由度机器人运动学模型的建立问题，在此基础上给出了该机器人运动学正解和运动学逆解的简化求解方法，简化了求解过程，大大减少了计算量。

Worn over the legs with a harness that reaches up the back and around the shoulders, X1 has 10 degrees of freedom, or joints -- four motorized joints at the hips and the knees, and six passive joints that allow for sidestepping, turning and pointing, and flexing a foot.
ENGADGET: NASA and IHMC building X1 exoskeleton to give us a lift, keep us fit in space and on Earth