吸湿与脱湿曲线间有一定的滞后现象。
There is hysteresis between the sorption and desorption curves.
卸载曲线通常都落在加载曲线之下，形成一个滞后回线。
The unloading curve normally falls below the loading curve to form a hysteresis loop .
分析了粒子速度滞后对压力——时间曲线和燃烧室流场的影响。
The effect of particle velocity lags on pressure-time curves and flow field in chamber is analyzed.
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