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.
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.
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。
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