微形传动装置是一个极精制的螺杆用液压作动筒。
The micro motion drive unit is a highly refined screw-driven hydraulic jack.
多重V形环填料，组合动负载，维护填料压缩，适用于使用频率高，环境严酷的应用场合。
Multiple V-ring packing, combined with live loading, maintains packing compression under high-cycle and severe service applications.
轨道刚度变化同时影响着轮轨动荷载和轨道动态几何形位的变化。
The changing of track stiffness affects wheel-rail dynamic forces and track dynamic geometry performance simultaneously.
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