At the stage of pressure higher than bubbling point, the imitated oil shows an elastic characteristic with a very low recovery;
结果显示：（1）高于泡点压力阶段，模拟油显现弹性驱动特征，采收率很低；
2
An improved oxidation ditch process using forced air supply low-pressure jet aeration system was used to treat middle-stage wastewater from pulping and papermaking.
采用供气式低压射流曝气系统改良型氧化沟工艺处理制浆造纸中段废水，对整个调试运行过程进行了介绍。
3
The stall surging characteristic and its prevention measure are analysed with focus on low-pressure axial fan, high-pressure axial fan and mutiple-stage axial compressor.