...在第一阶段仍被各企业所知, 假设代表企业总数的N 为连续随机变量, 分布服从 F( n) = Pr{ N ∗ n} , 没有质点( no point mass) 。 ∀ 各企业建立产能成本为C( ki ) , 满足如下条件: C.
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Astronomers believe that only 50% of the mass of the dilapidated star gets swallowed by the black hole; the other half gets "burped" back out into space before it reaches the point of no return.
天文学家们认为被黑洞吸入的恒星只有50%的质量会被它吞掉；而剩下的一半会因黑洞“打嗝”而在万劫不复之前返回外界。
The complexity is rapidly reaching a point of critical mass, where one single developer can no longer know everything needed to be proficient at his or her job.
复杂性迅速地到达一个临界点，即一个单独的开发者已经不能精通他或她工作中的方方面面了。
No matter how the mass ratio of the raw materials changed, the melting point of the copolymers was always lower than that of the homopolyamide.
在原料的质量比互相接近时，共聚物的熔点最低，但是无论各组质量比如何变化，其熔点总是要低于本体聚酰胺的熔点。
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