... 宽度长度比 W/L width to length ratio ; width to length ratio 轮廓长度比 profile length ratio 舵平衡部分长度比 length-balance ratio ...
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profile bearing length ratio 间轮廓支承长度率
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Root length density varied with fertigation frequencies, and the ratio of root length for different soil layers to the total root length in the profile varied with fertigation strategies.
施肥频率对根密度的影响主要是引起各土层根密度大小的变化，运行方式则对各土层根长占整个剖面根长总和的比例产生影响。
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