针对外环流活塞泵运转时出现的汽蚀、震动问题，从理论上分析了转子型线与闭死容积、流速变化和发生汽蚀的内在关系；
To the problem of cavitation and shock that appears in the outside circulation piston pump running, the relation-ship between rotor profile and dead volume, flow rate and cavitation were analyzed.
根底上统统的课本战历市肃赣弈做品皆是一戏诵常常没有被认坑弈闭于历史如何死少的假定。
Underlying every textbook and every historical work are a set of often un-acknowledged assumptions about how history works.
根底上统统的课本战历市肃赣弈做品皆是一戏诵常常没有被认坑弈闭于历史如何死少的假定。
Underlying every textbook and every historical work are a set of often un-acknowledged assumptions about how history works.
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