Not as popular as Under Seat Steering, due to arm fatigue or lack of intuitive design.

不是受欢迎座椅指导下，由于手臂疲劳或设计缺乏直观。

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Car driving on the seat cushion between the neck, and can improve the driving force of cervical vertebra, alleviate the supporting physiological fatigue.

车枕置于座椅和驾者颈部之间，能提高颈椎承托力，缓解驾者生理疲劳。

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The specifications for seat sealing test, body sealing test, body strength test, valve long term test, fatigue strength test and operation torque of plastic valves were summarized.

汇总了塑料阀门产品所需性能要求的阀座密封试验、阀体密封试验、阀体强度试验、阀门长期试验、疲劳强度试验和操作扭矩的规定。

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