The good velocity controllability of servo-dynamo can be used to realize variable blank holding force control through adjusting the force on sheet metal blank with a holding force adjusting equipment.
利用伺服电机良好的速度可控性，可以通过压边力调节装置调整作用在板坯上的压边力的大小，更容易实施变压边力控制。
In refer to the foundation of the classical transfer model of labor force, lead into system variable, and based Chinese system background, construct the decision model of rural labor force transfer.
在借鉴经典劳动力转移模型的基础上，引入制度变量，重新构造基于中国制度背景的农村劳动力转移决策模型。
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