| torque | 要施加的扭矩。 |
| mode | 要使用的力模式。 |
在刚体的质心处施加扭矩。
从概念上说，扭矩是在假想杠杆的末端施加的力，其中支点位于质心处。因此，五个单位的扭矩相当于在一个单位长的杠杆末端施加五个单位的力，或在五个单位长的杠杆末端施加一个单位的力。Unity 的单位是任意的，但扭矩 = 力 x 杠杆长度 的原则仍然适用。
注意，与 3D 刚体不同，Rigidbody2D 只能在一个轴上旋转，因此扭矩是一个浮点值，而不是矢量。
另请参阅：AddForce、AddForceAtPosition、Rigidbody.AddTorque。
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