理论分析与形成有限元公式所作的基本假设是罐内液体为理想流体以及它的流动是无旋的。
The theoretical analysis and the finite element formulation are based on the assumption that liquid in the tank is an ideal fluid and the liquid flow in the tank is irrotational.
本文以理想流体的势流理论为基础，建立高速双体船的数学模型。
Based on the potential theory of ideal fluid, this paper gives a type of mathematical model of high-speed catamaran.
采用理想流体一元管流理论，建立了引射器的理论计算方法。
The Calculating methods of the ejector were presented using the theoretical base of One-dimensional ideal flow.
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