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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<
Risk Factors of Low Back Pain among the Chinese Occupational Population:A Case-control Study
【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 Occupational and Environmental Health, School of Public Health, Peking University, Bei
【出 处】
：
生物医学与环境科学（英文版）
【发表日期】
：
2012年4期
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