运用运动弹性动力学方法建立高速曳引式电梯机械系统的动力学模型，进行其动态特性分析及振动控制研究。
The dynamic model of a high-speed traction-elevator is built up the dynamic characteristics of the system are analyzed and the vibration control techniques are studied.
文章分析了斩波串级调速电动机的机械特性及节能原理，建立了调速电动机的动态仿真模型。
In this paper, the mechanical characteristic and energy-saving principle of the chopping cascade speed regulating motor is discussed, and motor's simulation model is created.
而让机械工程师显得独一无二的能力是：分析及设计动态的物体及系统。
Perhaps the one skill that is the mechanical engineer's exclusive domain is the ability to analyze and design objects and systems with motion.
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