1.Preoxygenation replaces the primarily nitrogenous mixture of ambient air, which constitutes the patient's functional residual capacity, with oxygen.
以用氧气取代之前被氮气占据的肺泡。
2.The property that Activated Carbon Fiber (ACF) materials absorb sulfur dioxide in ambient air was studied by the Tetrachlorowercurate (TCM) pararosaniline method.