It has a 1:8~10 F : M ratio and high rate of occurrence in women of childbearing.
本病好发于育龄女性,男女发病率之比为1:8~10.
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A refracting reflecting flat CCD camera with quick F ratio and wide field is introduced.
介绍了折反式大视场强焦比平场CCD照相机的设计思想和方法,给出了详细的结构参数和像斑弥散直径.
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High F ratio oligopeptide was a kind of physiological function active peptide.
高F值寡肽是一类生理功能活性肽.
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第二,债务融资效应的综合得分F随资产负债率的上升而上升,到某一临界值以后,F随资产负债率的上升而下降,存在最优资本结构。
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19抗38分离7感的株系间分离比确认上述的遗传假设是正确的.
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GMI ratio profile shows symmetric two peaks for f > 100 kHz at zero DC bias current.
直流偏置电流改变了非晶带横向磁导率,造成阻抗变化的不对称.
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