Beyond the 600-denier ballistic-polyester shell and foam-reinforced rails, air columns lining the top and bottom help disperse force on impact.

它所配备的600纤度以上弹道聚酯外壳、泡沫加固横杆以及双面覆盖的充气条均有助于分散碰撞的冲击力，贴心呵护您心爱的冲浪板。

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Lining board used in the wet-grinding machine at metallurgical mines works under very bad conditions. It has to bear impact, corrosion and wear.

冶金、矿山等行业所用湿磨机衬板的服役条件十分恶劣，既要承受冲击，又要承受腐蚀和磨。

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Tunnel depth, subway train speed, loading frequency, tunnel lining elastic modulus and other factors have great impact on the ground vibration.

隧道埋深、地铁列车运行速度、荷载频率、隧道衬砌弹性模量等因素对地面振动有极大的影响。

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