The effects of heat treatment on the Cu-Zn-Al shape memory alloys with mixed REwere researched with the help of X-ray di......

It is widely acknowledged that Requirements Engineering (RE) has an important implication for the overall success of sof......

采用盐酸对贵州织金磷矿进行酸解,研究了盐酸浓度、反应时间、酸料比和温度等对磷矿中稀土浸出率的影响.结果表明,在下述最佳工艺......

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Field experiments were conducted in farmers’ rice fields in 2001 and 2002 to study the effects of nitrogen (N) man-agem......