This paper is devoted to the study of problem on arranging product, products transport and price of a single goods in economic net. The policy for maximum net profit is obtained.
本文研究了经济网络中,单一商品的生产组织,调运和定价问题,给出了使经济净收益最大化的具体方法。
Almost seventy percent of the workers in the study had a new or worsened breathing problem.
在这项研究中,近70%的工作人员有新的或恶化的呼吸问题。
To return to the problem of water pollution, I'd like you to look at a study conducted in Australia in 2012.
回到水污染问题上来,我想让你看看2012年在澳大利亚进行的一项研究。
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