计算机应用 科学与工程计算 释文 numerical solution for partial differential equation 偏微分方程数值解
- Ruan Jizhi
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- Ruan Yu
- Ruan Yuan
- Ruan Yuan's Catalog of Inscriptions on Sacrificial Vessels
- Ruan Zhangjing
- Ruapehu Volcano
- ru atom frequency standard
- Ru based superconductor
- Ru-based superconductor
- rubato
- ruba’i quatrains
- rubber
- rubber and plastic magnetic materials
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- rubber compounding