The minimum and maximum scales of output, in relation to the total demand or market size have an important bearing on the number and size distribution of firms in an industry and on concentration.
与总需求和市场规模相关的产出的最小与最大有效规模，对于产业中企业的数量和规模分布及产业集中度有着重要意义。
The inclusion number density and concentration have the similar distribution in the RH degasser.
夹杂物浓度和数量密度具有相似的空间分布；
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