Directionalwheels with the shock absorber function, give babies a comfortable trip.
避震功能定向车轮，令宝宝的出行更加舒适；
Mechanical seal design is key to the damage of damping function due to the loss of working liquid of hydraulic shock absorber.
为了防止液压减振器因工作液的损失而丧失阻尼效能，其机械密封结构的设计是重要问题。
Mechanical seal design is key to the damage of damping function due to the loss of working liquid of hydraulic shock absorber.
为了防止液压减振器因工作液的损失而丧失阻尼效能，其机械密封结构的设计是重要问题。
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