marker velocity

基本解釋

Conclusion IOS determine respiration impedance is a sensitive marker of judgement air velocity obstruction, it can replace FEV1 judge the degree of COPD patients airway obstruction.
結(jié)論IOS法測定呼吸阻抗是判斷氣道阻塞的敏感指標，可以代替FEV 1 判斷COPD患者的氣道阻塞程度。
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He used a body swerve to shake off a marker and create space for himself. Then, with marvelous disguise, with the merest of back lift from his left foot, he propelled the ball at startling velocity.
他突然變向擺脫掉防守他的球員，并為自己創(chuàng)造出空間，用一個逼真的假動作，僅僅向后提起左腳，就以驚人的速度將足球抽射出去。