本文提出了一种计算带制流板的鱼尾舵在螺旋桨尾流中水动力性能的方法。
The paper presents a new method for predicting the hydrodynamic performance of the shilling rudder behind a propeller.
砂矿的分布与滨海带的基岩性质、海岸带类型、地貌、水系、水动力条件、海底底质等密切相关。
The distributions have a close relation with bed rock property, littoral zone types, geography, water systems, hydraulic conditions and bed property of sea bottom.
根据水动力学弥散理论建立农药在包气带中运移与转化过程的数学模型，评价农药使用对地下水环境的影响。
A mathematic equation was established to model the leaching and transformation of pesticides in root zone and assess impact of pesticide on groundwater.
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