pump case短语¹⁴⁴⁹⁷²⁺² 基本例句 泵壳 CFD analysis on main pump with different outflow tube position pump case, different section shape orbicular pump case and different outflow tube shape pump case is carried out; 对具有不同压水室扩散管位置、不同类球形压水室截面形状、不同压水室扩散管形状的核主泵进行了 CFD分析； fabiao