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为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7<
Construction and characterization of double mutants in nitrogenase of Klebsiella pneumoniae
【摘 要】
：
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
【机 构】
：
Department of Microbiology, College of Biological Sciences, China Agricultural University, Beijing 1
【出 处】
：
科学通报
【发表日期】
：
2004年16期
【基金项目】
：
国家自然科学基金;国家重点基础研究发展计划(973计划)
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