marker velocity

基本解释

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.
结论IOS法测定呼吸阻抗是判断气道阻塞的敏感指标，可以代替FEV 1 判断COPD患者的气道阻塞程度。
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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.
他突然变向摆脱掉防守他的球员，并为自己创造出空间，用一个逼真的假动作，仅仅向后提起左脚，就以惊人的速度将足球抽射出去。