在前人研究基础上，提出了一种新的自由充填速率计算方法。
On the basis of predecessors study, a new method for calculating free-filling rate was proposed.
本文是在前人研究的基础上，主要从包装方案角度加以改进。
This paper is based on predecessors' researches, mainly from the Angle If packing plan.
笔者在前人研究的基础上，浅谈流行音乐中的戏曲文化应用与体现。
The author on the basis of previous studies, the pop music in the opera culture application and embodiment.
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