Kenya like most of sub-Saharan Africa is reliant predominantly on agriculture and natural resources;which include land, ......

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在浑江吉林省段有机污染物自净规律研究基础上，采用逆推法，计算了主要污染物ＣＯＤｃｒ和挥发酚的环境容量以及污水达标排放时的污水允许排放量......

介绍了强力皮带机非防爆电气设备更换为防爆电气设备的设计方案和改造中遇到的问题及解决办法.......

在对HSK工具系统的结构进行分析的基础上,建立了HSK工具系统的力学模型.利用该模型,计算了许用承载,分析了实验结果,讨论了影响HSK......

对L形、Z形架空敷设供热管道转角附近活动支架的最大允许间距进行了计算。转角附近活动支架的最大允许间距为长直架空敷设供热管道......

This research is focused on the search of a biomass for the sequestration of fluoride from drinking water. Defluoridatio......

The purpose of this inventory model is to investigate the retailer’s optimal replenishment policy under permissible del......

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