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Agricultural chemicals
Includes chemicals designed for agricultural use for protection of crops from fungus and insects, as well as for the growth and protection of plants.
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herfindahl hirschman 索引
Economy; Economics
一個可能的壟斷的警告信號。反壟斷經濟學家經常通過測量的程度,其輸出是集中在少數幾家公司衡量工業的競爭力。,其中一項措施是 Herfindahl Hirschman 索引。來計算它,在業界採取的每個公司的市場份額,廣場,然後將它們添加到所有最多。如果有 100 家大小相等公司 (市場與靠近完全競爭),指數為 100。如果有四個大小相等公司 (可能寡頭壟斷) ...