在实际的疏浚作业过程中，由于水下土质、河床形态和作业过程的复杂性，严格地讲，疏浚工况是非恒定的。
Because of the complexity in underwater soil, river bed condition and dredging process of a real dredging project, dredging conditions are very often unsteady.
在实际的疏浚作业过程中，由于水下土质、河床形态和作业过程的复杂性，严格地讲，疏浚工况是非恒定的。
Because of the complexity in underwater soil, river bed condition and dredging process of a real dredging project, dredging conditions are very often unsteady.
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