为了在(0,5)点产生数值为10m/s的流速,求通过(0,5)点的流函数值_______m2/s.
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硒可分为有机硒和无机硒,真正发挥生物活性作用的是无机硒。
内力湖是地球内部力量作用结果产生的湖泊。如构造湖、火山湖和 。
There is so much to experience that the urban d__________ capacity is reduced to react in a “spontaneous” and “natural” way to urban existence.