论述了并联机床各分支杆的约束自由度对运动平台自由度的影响，提出了主动链和约束链的概念。
It is analyzed that the influences from limb kinematical constraints to degrees of freedom of moving platform in the design of parallel machine.
文章论述了并联机床各分支链的运动约束对运动平台自由度的影响，提出了主动链和约束链的概念。
It is analyzed in this paper that the influences from limb kinematical constraints to degrees of freedom of moving platform in parallel machine design.
用户根据探测的链路带宽和本地网络的业务状态，对未来状态进行预测，并主动控制自己的网络行为。
An Internet user could predict the future status based on the link bandwidth and the local traffic, and then control his own network behavior.
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