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1·The erosion-abrasion, which is one of the main reasons of the leakage of the power-station boiler-conduit-pipe 'contra-flow heating-surface, accounts for 75% or more of the accidents of the boiler.

冲蚀磨损是电站锅炉对流受热面管道泄漏的主要原因之一，占到锅炉事故的75%以上。

2·There is a traffic pattern that we call a contra flow lane.

有一种我们称之为逆流车道的交通模式。

3·The working principle and key parameters of the blade separator were introduced, and tests on the performances of adding the separator on the contra-rotating axial flow fan were carried out.

介绍了叶片分离器的工作原理和关键参数，并对加装了叶片分离器的对旋轴流风机进行了性能测试试验。

4·The maximum velocity and flow quantum of blood of contra hemisphere increased markedly in moderate brain injury.

中型颅脑损伤的对侧半球，伤后脑最大血流速度及流量显著增加。

5·By means of numerical simulation, the research on inner-flow of mining contra-rotating axial flow fan working under low flow rate condition was made.

通过数值模拟手段，对一矿用对旋式轴流式通风机小流量工况内部流动进行了深入研究。

6·The working principle and key parameters of the blade separator were introduced, and tests on the performances of adding the separator on the contra-rotating axial flow fan were carried out.

通过对对旋式轴流通风机小流量特性的分析，并利用实验验证分离器能够控制和改善对旋风机小流量内部流动特性，从而获得叶片分离器设计和使用的一些关键技术。

7·An experimental investigation was completed for studying the flow field between two contra-rotating fans.

采用实验方法对对旋风机对旋叶轮级间流场进行了研究。