美国瓦茨系列A S导气罩专用于有效地将气体从循环加热系统的水中分离出气体，因此也可安装这种导气罩。
Watts Series AS air Scoop which is designed for efficient separation of air from water in hydronic heating systems can also be installed.
二组的年龄、术前气导（AC）和术前气骨导差（ABG）相似，统计分析差异无显著意义。
The two groups were comparable in the air conduction (AC) and air bone gap (ABG) values , and had no difference statistically.
把白色的导气盖压入硅胶导气阀门。请确保导气盖和导气阀门之间没有间隙，在喂养前导气管的切口是翻开的。
Push the white vent cover onto the silicone vent as shown. Make sure: There is no gap between cover and vent, the slit si open before feeding.
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