垂直和倾斜上升管中油水两相流流动结构及其相态逆转特性对流量检测影响很大。
The flow structure and the phase inversion have great influence on the flow measurement in vertical and inclined upward oil-water two-phase flow.
吸气气流流动方向与阀座方向基本一致，气阀流量系数高，流动损失小；
The aspiration air flowing direction is basically same with the direction of the valve seat. The flow coefficient of the air valve is high, and the flow loss is low.
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