tubbiness

There was statistical significance of moist rales 、 tubbiness thorax 、 lung boundary descend ( P < 0.05);

双肺湿啰音、桶状胸、肺界下移、肺心病体征2组差异有统计学意义（P<0.05）；

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There was statistical significance of moist rales 、 tubbiness thorax 、 lung boundary descend ( P < 0.05); Results: ( 1) Clinical characteristics of PF-COPD were between COPD and pulmonary fibrosis.

结果：（1）PF-COPD的临床表现介于上述两种疾病之间。双肺湿罗音、桶状胸、肺界下移、肺心病体征2组差异有统计学意义（p<0.05）；

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Cotton net surface prevent part of skin suffering from wetness because it is fast to absorb wetness; funnel design is better than tubbiness design, because it is not easy to flow back.

吸水快的棉网面可使局部皮肤不受潮湿之苦；漏斗型设计优于桶状设计，渗入的液体不易回流。

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