在小角落，或在桌脚下，或在垫子角的破损处，或在暖气管下，它们一个接一个的出现。

In a corner, behind a table leg, in the frays at the end of a mat, or hidden under a heater, they kept turning up.

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改变分离器入口面积及排气管下口直径对分离空间内颗粒浓度分布的影响规律是不同的。

The influence of inlet area and diameter of exit tube on particle concentration distribution is also investigated.

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目的：观察定压和定容单肺通气模式对小儿单腔支气管插管下行肺叶切除术时呼吸生理的影响。

Objective: To investigate the effect of two modes of one-lung ventilation(OLV) on lung lobectomy in pediatric patients.

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