通过计算,确定了水封罐的容积和尺寸。
If water seal ring, should check with the stuffing at the top of the range is correct.如有水封环,应检查其与填料函顶部的距离是否正确。
Objective To investigate the clinical significance between thoracic infections and the replacing time of one-off water seal bottle.目的探讨胸腔感染与一次性水封瓶更换时间长短的临床意义。