您要查找的是不是：
- 空间E-R模型Spatial E-R model
- P-S-R模型P-S-R model
- S-I-R模型susceptible-infected-recovered (SIR) model
- 她说话带着乡下人的轻柔的r音。She speaks with a soft rural burr.
- r模型r- model
- 他在文件上签上姓名的首字母G.P.S。He initialed the paper G.P.S.
- R-SBFR-SBF
- E-R模型E-R model
- R&D资金research and development fund
- s/p值s/p value
- R&D合作R&D cooperation
- C-R模型C-R modeling
- 厚向异性系数rcoefficient of normal anisotropy r
- P／SP/S
- G-R模型Gutenberg-Richter model
- （R）-2-三甲基硅-2-羟基丙腈( R )-2-trimethylsilyl-2-hydroxyl-ethyleyanide
- S-P表S - P form
- S-O-R模型S-O-R Model
- P-S转炉P-S converter
- 传统E-R模型traditional E-R model
