The thick main groove sediment in inner fan and braided groove in middle fan are play targets for subtle reservoir.
温暖潮湿的古气候条件。 从储集层角度看，厚层内扇主沟道和中扇辫状沟道应是隐蔽油气藏的勘探目标。
Adopting fluent software, the inner flow of the axial flow fan in aircondition is simulated, the influence of different simplified models is discussed.
用三维流场计算软件，对空调用轴流风扇的内部流动特性进行了数值模拟计算，讨论了不同的简化模型对计算结果的影响。
The tapered windscreen flow field of the fan is composed of the outer ring turbulent jet and the inner sink, which tightly closes gas and dust to ensure the safety production.
风扇环形外腔产生的正压湍流射流在内腔负压汇流作用下形成锥形风幕流场，将处于流场范围内的气体及粉尘严密封闭起来，使安全生产得到保障。
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