采用封闭矢量环法推导建立含有高副的变长连杆的外动颚式破碎机构的数学模型。
The math model on out-moving jaw crusher mechanism of changing length link with high-joint is established by using closing-vector-circle method.
针对当前集群文件系统缺乏动态扩展性和高可用性的不足，提出了一种基于逻辑矢量环结构的集群文件系统HANDY。
Most of existing cluster file systems are shortage of dynamic scalability and high availability, so we provide a new cluster file system based on logical vector rings, named HANDY.
又针对目前存在的问题，研究了基于电压矢量控制的滞环控制系统及方案，其基本内容如下。
Aiming at present problems, the author also studied the hysteresis control system based on voltage vector control and its corresponding scheme.
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