电磁环学术论文与技术报告境
electromagnetic environment
异井循环水源热泵
different well water circulation heat pump
异密度循环流化床
differential density circulating fluidized bed
异色满并杂环化合物
isochroman-fused heterocyclic compound
溢流环换能器
free-flooded ring transducer
翼形环流理论
circulation theory of airfoil