欧洲的一种山楂属植物，叶深裂，果亮红色；在园艺上已培育出各种不同的类型，常用作绿篱；在北美东部成为逸生种。
European hawthorn having deeply cleft leaves and bright red fruits; widely cultivated in many varieties and often grown as impenetrable hedges; established as an escape in eastern North America.
导水叶力矩具有自关闭特性，对机组防飞逸具有较好的效果。
The force moment of guiding water blade has self close function, which can effectively protect the runaway of generating unit.
导水叶力矩具有自关闭特性，对机组防飞逸具有较好的效果。
The force moment of guiding water blade has self close function, which can effectively protect the runaway of generating unit.
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