If the tool is moving during this period, the effective centerofmeasurement will be a certain distance from the point at which the measurement started. This distance is the lag.
如果在记录时间内仪器移动，则测量的有效中心和刚开始的测量点有一定的距离，这一距离就是滞后距离。
2
The measurement error of differential absorption laser radar caused by the shift of its center frequency in measuring atmosphenc density has been discussed particularly.
详细地讨论了微分吸收激光雷达测量气体密度时中心频率的漂移所引起的测量误差。
3
The static measurement includes weight, centerof gravity, static lead lag, bending stiffness and torsion stiffness.