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- tourist geography concentrate index 地理集中指数
- In Sanming and Ningde, the seasonal concentration index (R) was high est, and the lowest R appeared in Xiamen. 三明和宁德的R值（季节集中指数）最高，而厦门R值最低。
- Market shares and the concentration index of HHI are commonly used for measuring the horizontal market power of sellers. 市场份额和集中度指标HHI常用来衡量卖方的横向市场势力。
- In the same study, profits in manufacturing tend to increase with the concentration index indicating that the biggest firms possess sufficient market power to fix prices. 同样的研究指出，制造业的利润伴随着集中化的指标增加，意味着最大的企业拥有充足的市场力量来决定物价。
- It's too hot to concentrate on book. 热得不能集中心思看书。
- I must concentrate my energies on decorating today. 我今天必须集中精力搞装饰。
- I can't concentrate on my work when I'm tired. 我累了就无法集中精力工作。
- Don't put me off when I'm trying to concentrate. 我正要集中注意力呢，别打搅我。
- We must concentrate our attention on efficiency. 我们必须把注意力集中在效率上。
- She couldn't concentrate on a book very long. 她不能长时间专心读一本书。
- The index is at the back (of the book). 索引在(书的)末尾。
- I must concentrate upon my work now. 我现在必须集中精力工作。
- comprehensive concentration index 综合集聚指数
- fractional inhibitory concentration index 分级抑制浓度指数
- Herfindal - Hirschman concentration index HHCI
- Automatic modification of the index register. 自动修改变址寄存器内容。
- Birds concentrate (in places) where food is abundant. 鸟聚集在食物丰盛的地方。
- A person's face is often an index of his mood. 一个人的脸部表情常常反映这个人的情绪。
- Do you know the price index in the city? 你知道这个城市的物价指数吗？
- The index is arranged in alphabetical order. 这索引是按字母顺序排列的。
