It is a key using about semi-active seat suspensions that should have real-time damper.

应用半主动座椅悬架系统的关键之一是具有可实时调节的阻尼器。

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The experiments compare the performances of passive seat suspension and semi-active seat suspension, and verify the effectiveness of the designed control system.

通过座椅悬架实验，比较被动悬架和半主动悬架系统的振动控制效果，验证控制系统的有效性。

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The simulation results indicate that the semi-active seat suspension is better than passive seat suspension in restraining the vertical vibration of body and enhancing the comfort of the seat.

仿真结果表明采用磁流变阻尼器半主动座椅悬架能较好的抑制座椅垂直方向上的振’动，并提高了座椅的舒适性。

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Dr Hondou's model, in short, was valid only in the case of a single passenger sitting in an empty carriage with an active mobile phone on every seat.

ECONOMIST: Are mobiles phones on trains dangerous or not?

Michael Portillo, though potentially formidable, returned to active politics after losing his seat in 1997 with the fire in his belly evidently extinguished, a fact confirmed by his strangely querulous bid for the leadership.

ECONOMIST: Bagehot

Never use a rear-facing child car seat in a seat protected by an active frontal airbag.

BBC: NEWS | UK | Politics | 'Use car seats up to age of 11'