So you can immediately see that with the spring, the mass must enter into the period.
因此你马上能看到，在弹簧的例子中，物体质量影响周期。
A realistic mass and spring laboratory.
现实的质量与弹簧实验。
The energy of the spring that even mass is distributed is studied.
对质量分布均匀的弹簧的能量进行了研究。
In the spring, the meadow is a mass of daffodils.
春天，草地上开满了黄水仙。
And use the mass-spring model to simulate the transmutation of fabric when be draw.
同时，运用弹簧-质点模型，模拟了编织物受到拉力后变形的情况。
And use the mass-spring model to simulate the transmutation of fabric when be draw.
同时，运用弹簧-质点模型，模拟了编织物受到拉力后变形的情况。
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