Swing check valves are used to prevent reversal of flow in horizontal or vertical pipe lines.
旋启式止回阀用于防止水平管路或垂直管路的流体倒流。
Es is caused by long-standing left-to-right shunt lesions, which induce pulmonary vascular changes, resulting in reversal of the shunt flow.
ES是由长期左向右分流引起，该左向右分流诱导了肺血管改变，导致分流方向逆转即右向左分流。
Slamming of check valves is the result of failure of the valve disc to reach its closed position before the fluid flow reversal.
止回阀的撞击现象，是由于在流体倒流之前，阀门的阀瓣没有到达关闭位置造成的。
A new computational scheme was developed to solve a three-dimensional model of a periodic flow reversal reactor by ADI alternating direction implicit method.
文中针对圆管式径向对称流向变换反应器三维模型，利用交替方向隐式方法(adi)建立新的求解格式。
Dynamic regulation of reversal time can further reduce the energy consumption of the regenerative soaking pits according to the flow and the temperature of the gas.
如根据均热炉实时烟气流量和排烟温度动态调节换向时间，可进一步降低均热炉的能耗。
The existence and uniform boundedness of the global solutions of the model for sulphur dioxide oxidation in a tubular reactor with periodic flow reversal are proved by the invariant domain method.
利用不变区域方法，证明了二氧化硫催化氧化管式反应器流向变换强制操作模型整体解的存在性和一致有界性。
The results show that the emission level of the cyclic flow reversal combustion is lower than that of one-way flow combustion.
结果表明，相对于单向流动，往复流动有更好的燃烧排放效果。
The starch is purified to Grade I of GB2-92 National Standard by 12~17 groups of vortex machines with reversal flow cleaning process for removal of the protein and impurities.
净化淀粉采用12-17组旋流器逆流洗涤工艺除去蛋白质和轻杂物，使淀粉标准达到GB2-92一级国家标准。
Results obtained show that reversal procedure of diagonal branch contains two stages, one is stratified flow of smoke and airflow toward different directions, which is a quantitative change stage.
实验结果表明：下行通风角联分支风流的逆转可以归结为烟流和风流异向分层流动的量变过程和风向突变的质变过程。
The PWM rectifier is a "green" power electronics equipment since it offers sinusoidal input currents, unity or adjustable power factor, reversal of power flow.
PWM整流器可实现正弦的网侧电流、单位或可调的功率因数、能量的双向流动，是一种真正意义上的“绿色环保”电力电子装置。
Conclusions The increase trend of pulmonary venous reversal flow velocity can reflect indirectly the worsening of LV diastolic disfunction;
结论肺静脉反流速度的增大趋势可以间接地反映左室舒张功能的恶化趋势；
Conclusions The increase trend of pulmonary venous reversal flow velocity can reflect indirectly the worsening of LV diastolic disfunction;
结论肺静脉反流速度的增大趋势可以间接地反映左室舒张功能的恶化趋势；
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