A device, such as a cylinder, spool, or frame, that turns on an axis and is used for winding and storing rope, tape, film, or other flexible materials.
卷轴：一种如卷筒、卷轴或框，绕轴旋转装置，用于卷起和贮存绳索、磁带、胶片或其它带弹性的物质。
An apparatus used for hoisting weights, consisting of a vertical spool-shaped cylinder that is rotated manually or by machine and around which a cable is wound.
绞盘，卷扬机一种用于吊起重物的装置。该装置包括一垂直的线轴形圆筒，由人力或机器使之旋转，在其周围绕有。
This paper introduces the sealing and leakage preventative of oil tank, driving shaft, control mechanism, oil cylinder, spool, etc. in particular.
本文着重介绍了油箱、传动轴、操纵机构、油缸及滑阀等部件的密封防漏。
Special structure of the spool can ensure that the flow curve of any change to the two-cylinder has the good convergence, and thereby the shock of exchange is reduced.
阀芯的特殊结构，保证任意两缸换向时的流量曲线的良好衔接，从而减少换向冲击。
Special structure of the spool can ensure that the flow curve of any change to the two-cylinder has the good convergence, and thereby the shock of exchange is reduced.
阀芯的特殊结构，保证任意两缸换向时的流量曲线的良好衔接，从而减少换向冲击。
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