如果应用程序窗口扩展或收缩，这块空间也会根据弹簧长度成比例地伸缩。
As the application window expands or contracts, this space will scale in proportion to the length of the spring.
所以产生一个力矩，和这个角成比例，就像线性弹簧，中产生的力矩和，线位移成比例。
So we generate a torque which is proportional to the Angle, very similar to the linear spring whereby we generate a force which is proportional to the linear displacement.
很多弹簧做过实验后，得出的事实-，它们叫做理想弹簧-，对很多弹簧来说，这个力，和移位x成比例。
Experimental fact - that many springs — - we call them ideal springs — for many springs, this force is proportional to the displacement, x.
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