The unsteady model with multiparameter reflects the characteristics of the unsteady flow in different directions and that of the unsteady water quality under aerobic, anoxic and anaerobic conditions.
该模型不仅反映了网状河道中非稳态的水流及水质变化特点，还反映了水体分别处于好氧、 缺氧、 厌氧状态下的水质及底泥中主要污染物的变化规律。
Based on the unsteady potential flow theory of incompressible liquid, a model of water-entry impact force for air-launched mine was presented, and the water-entry impact force was calculated.
基于不可压缩流体的非定常势流理论建立了空投水雷入水冲击力计算的数学模型，对水雷的入水冲击力进行了计算。
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