And the experimental tests had been carried out to verify the established model as well as the dynamic characteristics under opening loop control. 并通过实验，对所建立的动力学模型及开环控制下平台的实际动态特性进行了验证。
The energy loss, combined with angular-momentum redistribution, causes a dense ring system to flatten. 由于能量散失再加上角动量重新分布，稠密的行星环系统就变得更为扁平。
