动脉血氧分压arterial pO2
肺泡-动脉氧（梯度）alveolar-arterial oxygen(gradient)
肺泡-动脉（梯度）alveolar-arterial(gradient)
动脉的arterial
动脉氧分压Arterial Partial Pressure of Oxygen
动脉血氧分压arterial partial pressure of oxygen
动脉韧带淋巴结lymph node of arterial ligament
铁路干线arterial railway【铁路】;main railway【铁路】