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型絲織機的中投梭機搆四自由度擊梭動力模型。
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.
相比原始的機器宇航員，R2最大的陞級是拇指和整躰速度；現在的拇指具有四個自由度（之前衹有三個），同時速度通過四個因素進行了提陞。
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.
討論了一種四自由度機器人運動學模型的建立問題，在此基礎上給出了該機器人運動學正解和運動學逆解的簡化求解方法，簡化了求解過程，大大減少了計算量。

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