The factors affecting the water-surface profile and channel storage curve may be summarized as the physical geographical condition and the flow regime of the river reach.
影响水面线及槽蓄曲线的因素可概括为河段自然地理状况及水流情势。
Steady water surface profile of gradually varied flow can be calculated using either a steady flow approach or an unsteady flow approach.
使用计算机计算明渠恒定渐变流水面曲线有两种分法：恒定流方法和非恒定流方法。
The experiment studied the effects of residue used as surface mulch, mix with soil and a separate horizon in soil profile on soil water and salt movement.
本试验主要研究了作物秸杆表面覆盖、垂直覆盖（混施）和隔层对土壤水盐运动的影响。
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