您要查找的是不是：
- C/N比 carbon to nitrogen ratio
- 比 ratio
- C／N比 C/N ratio
- C、N比 C/N
- 高C／N比秸秆 straw with high C/N
- 性价比 performance price ratio
- c语言
- 科比 Bryant
- 不比 unlike
- 维生素C vitamin(e) C
- 配比 mixture ratio
- C语言程序设计 Programming in C
- 环比 link relative ratio
- 可比 comparable
- 信噪比 Signal-to-Noise
- S/N比 signal to noise ratio
- 比起 compared with
- C/N C/N
- 比表面积 specific surface
- 比热 specific heat
