In this paper, the methods of dynamic characteristic and random vibration response analysis for the structure of tractor-trailer system are presented.

本文给出拖拉机-拖车系统结构动力特性与随机振动响应分析的实用计算方法。

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A method of optimum design on active vibration control system of piezoelectric smart structure using finite element analysis software ANSYS was introduced.

介绍了利用有限元分析软件ANSYS，对压电智能结构的主动振动控制系统进行优化设计的方法。

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A new vibration monitoring, analyzing and fault diagnosing system, the structure of its data acquisition system, performance and characteristic of the software were introduced.

介绍一种新型振动监测分析和故障诊断系统，其数据采集器的结构以及系统软件的功能和特点。

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The isolation cones placed strategically in a tripod pattern at the bottom corners of the sound system reduce the vibration frequencies and provide the most stable supporting structure regardless of the surface on which it rests.

ENGADGET: Croon Audio's Original Bluetooth speakers promise not to creak while they're cranked

The successful bidder, GoalControl, believes that one of its strengths is the fact that neither the ball nor goal structure need to be changed for the system to work -- with referees receiving a vibration and optical signal in their watches to inform them of a successful score.

CNN: Latecomer wins FIFA goal-line tech deal