Objective: To evaluate the variation of the lung volume in acute respiratory distress syndrome (ARDS) dogs when PEEP set at levels of different inflection points on the pressure volume(P-V) curves.
目的：探讨根据压力-容积（P-V）曲线选择不同水平的呼气末正压（PEEP），急性呼吸窘迫综合征（ARDS）犬肺容积的变化情况。
The provenance experiment on Eucalyptus smithii shows that height, DBH, volume have little variation in provenance, and great variation in individuals.
史密斯桉种源试验结果表明：树高、胸径、材积种源间变异相对较小，而种源内个体间的变异较为丰富。
The results demonstrate that the variation of annual maximum flood volume with duration has a simple scaling property in a certain period of time.
研究结果表明：在一定的历时范围内，年最大洪量随历时变化具有单标度性质。
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