·2,447,543篇论文数据，部分数据来源于NoteExpress
A reform scheme with exit guide vane remained for large axial flow pumps is discussed deeply.
对大泵改造保留出口导叶的叶轮改型方案作了深入的探讨。
youdao
应用推荐
模块上移
模块下移
不移动