... fractional precipitation 分级积淀 fractional solution 分级溶解液 fractional washing 分段逆洗 ...
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Several humic acids of different molecular weight were fractionated by means of fractional solution containing various volume ratios of ethanol and ethyl acetate.
以不同体积比的乙醇和乙酸乙酯分级溶解方法，分离出了几种不同分子量的腐殖酸。
We derive the analytic solution of the non-homogeneous fractional diffusion-wave equation under the mixed boundary conditions using the method of separation of variables.
利用分离变量方法导出了在混合边界条件下的非齐次分数阶扩散-波动方程的解析解。
One is the asymptotic nature with the solution of small fractional damping oscillator.
一类是具有小分数阶阻尼振子解的渐近性。
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