它有很多品种，一般采用PU原料来生产，质量稳定，耐高压，耐气候性，耐磨损，耐曲折，管体光滑柔韧，颜色鲜艳，弹性高，耐绕曲，弯曲半径小。
19世纪初美国邮政使用了气动管精密系统，但伦敦使用了完全不同的方式，建立了这个小规模的铁路系统，只能用于包裹运输使用。
The USPS used an elaborate system ofpneumatic tubes during the early 19th century, but London took anentirely different approach and built this scaled-down railroad systemto be used only for parcels.
气动刀闸阀气动阀门价格表气动管夹阀气动角座阀闸阀的作用是利用阀瓣沿通路中心的垂直线方向移动来实现开启或关闭管道通路。
Valve is the role of central valve along the pathway of vertical lines move to achieve open or closed pipeline access road.
作为1号阀的替代品，美国红阀公司A型夹管阀和无故障气动系统700，也就是左图中的3号阀，极大地改善了流体介质的流动性。
As a replacement of valve number 1 with Red valve's Type a and pneumatic fail-safe system 700, valve number 3 has accomplished an improvement in the fluid dynamics of the system.
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