基于风管所承受的各种荷载来评定其工作能力，通常在允许的气流速度（或压力）下，是否只产生较小的弹性变形，而不产生屈曲。
Producing little stretch distortion and having no flection under permitted air speed and pressure are the criterions of assessing air conduit capacity based on its bearing load.
通过在此设备上的一系列实验，获得了在不同压力和不同气流速度下液体轴对称抛撒的近场纹影照片。
By using the combination facility, many schlieren photographs of the axisymmetrical dissemination, breakup and atomization of the liquid under the action of axial airflow were obtained.
这种新工艺的关键技术是如何形成旋涡气流及研究气流速度和压力对加工效果的影响关系。
The key of the new technology is how to generate the swirling airflow. And we must study the influences of the speed and pressure of the airflow on the processing effects.
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