您要查找的是不是：
- 空间E-R模型Spatial E-R model
- 空间space
- 关于欧几里得空间E~n中的等距离集On equal-distance sets in Euclidean Space E~n
- E-R模型E-R model
- 关于欧几里得空间E~d中的二距离集On two-distance sets in Euclidean Space
- r模型r- model
- 空间的spatial
- 她说话带着乡下人的轻柔的r音。She speaks with a soft rural burr.
- C-R模型C-R modeling
- 设M是欧几里德空间E~(m+p)或球S~(m+p)中的m维封闭子流形,T_(?)Let M be a closed m-dimensional submanifold in the Euclidean space (or sphere Sm+p).
- 可用空间space available
- R-SBFR-SBF
- G-R模型Gutenberg-Richter model
- R&D资金research and development fund
- 磁盘空间disk space
- R&D合作R&D cooperation
- P-S-R模型P-S-R model
- 维生素Evitamin(e) E
- 厚向异性系数rcoefficient of normal anisotropy r
- 发展空间development space
