The flow resistance for water and air flowing through the mini-fin structure was less, while heat transfer coefficient was higher than in the sintered bronze porous structure.
与相近孔隙率的锡青铜烧结多孔结构相比，该微细板翅结构中的流动阻力大大减小，而对流换热能力却增强。
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.
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.
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；
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