强制收兑具有被垂直安装于提升接收机天线的柔性管。
The Evader has a flexible tube that is mounted vertically to elevate the receiver antenna.
根据垂直管固液两相流的特征 ，考虑固液两相流密度、浓度、弹模、阻力等特点 ，对粗颗粒水力提升不稳定流进行数值模拟。
On the basis of previous researches, the concentration characteristics of large size particles in vertical pipes by hydraulic lifting were studied through experiments and theoretical analyses.
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