The dimensions of these bubbles can be controlled simply by changing the velocity of the airflow across the surface.
这些气泡的结构可以通过改变空气在表面的流速来控制。
The experimental results show that acoustic resistance of perforated plate is related to plate thickness, aperture diameter, numbers of aperture, acoustic frequency and airflow velocity.
研究表明：穿孔板的声阻与孔板厚度、孔径、穿孔数目、声波频率和气流速度等因素有关。
With numerical simulation method the effect of the airflow pattern created by the air inlet of varying velocity on contaminant concentration and thermal comfort in an operating room was investigated.
就变化风速的送风口所产生的气流流型对外科手术室内的细菌浓度和人体热舒适的影响进行了数值模拟分析。
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