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C/N ratio can be taken as a rooting index of elm tip.
碳/氮比率可作为白榆新梢生根的指标。
youdao
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The individual Weibull parameters and the cable life index N are evaluated.
评定各项威布尔参数和电缆寿命指数N值；
youdao
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The individual Weibull parameters and the cable life index N are evaluated.
评定各项威布尔参数和电缆寿命指数N值；
youdao