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。

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The effect on circumgyration of carbon grain and the ablation of nose-tip during re-entry of stratagem missile is analyzed according to thermal transfer theory, thermo-aerodynamics and N-S equation.

根据气动热力学、传热传质学、N - S方程，分析了战略导弹再入时端头帽烧蚀与碳颗粒的旋转效应，研究结果表明碳颗粒的旋转有利于防热。

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C and N conternt as well as C/N ratio can be taken as a rooting index of elm tip.

插穗中碳、氮的绝对量及碳 /氮比率可作为白榆新梢生根的指标。

youdao

C and N conternt as well as C/N ratio can be taken as a rooting index of elm tip.

插穗中碳、氮的绝对量及碳 /氮比率可作为白榆新梢生根的指标。

youdao