定义腿部的转动/扭转量在膝部和脚踝之间的分配方式。
当腿部需要基于反向动力学扭转或转动时，lowerLegTwist（加权范围为 0..1）决定了对膝部和脚踝施加旋转的程度。当 lowerLegTwist 设置为 0 时，将所有扭转量施加到膝部。设置为 1 时，将所有扭转量施加到脚踝。默认值为 0.5，即在膝部和脚踝之间平均分配扭转量。
另请参阅：HumanDescription.upperArmTwist、HumanDescription.lowerArmTwist、HumanDescription.upperLegTwist。
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