The rigid shaft model and flexible shaft model of the drive train based on the spring-mass-damper system are used to analyze the dynamics of the drive train.

采用了弹簧—质量—阻尼系统结构并按照风力机运行机理，建立了风力机传动系统的刚性轴模型和柔性轴模型，并确立了相应的仿真分析方法。

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The R. P. D. is presented in this paper. Except the usual ship model test, it is possible to carry out measurement of tests for the underwater model and multi-propeller shaft model.

本文提出的变磁阻式螺旋桨动力仪除用于水面船模试验外，并可用于水下模型及多桨轴模型试验。

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Based on the engine mathematical model and engine control law, the optimal control for turbo shaft engine acceleration is investigated.

在了解原型发动机数学模型和控制规律的基础上，对涡轴发动机加速过程的最优控制问题进行了研究。

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Beware of buying golf clubs for your giftee, unless you have very specific marching orders, such as a particular new driver model with a certain shaft, loft, lie angle and grip size.

WSJ: What to Get a Golfer for the Holidays | Golf Journal by John Paul Newport

The Model Two uses RetroSound's patented InfiniMount adjustable shaft and bracket system to allow installation into virtually any classic vehicle without dash modification.

ENGADGET: RetroSound's Bluetooth-enabled in-dash radio for classic cars now up for grabs