专业化经济与范围经济的权衡最终确定最优分工水平；从非排它性要素的配置说明了范围经济对分工的限制。
We also conclude that the level of division of labor is determined by the Trade off between economies of specialization and economies of scope.
对简单随机不放回抽样，在总体非敏感属性个体比例未知的情况下，给出了两个子样本容量的最优配置。
Under simple random sampling scheme without replacement and unknown proportion of population possessing neutral attribute, the optimal allocation of sizes of two sub-samples is given.
专业化经济与范围经济的权衡最终确定最优分工水平；从非排它性要素的配置说明了范围经济对分工的限制。
We also conclude that the level of division of labor is determined by the Trade off between economies of specialization a...
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