Observational Characteristics of Multi-wavelength Radio Emissions Associated with Different Velocities of Solar Coronal Mass Ejection

12 Solar Coronal Mass Ejection(CME)events are compared. It is found that 6, out of 12 events, are fast(>1000 km/s) CMEs and 6, out of 12 events, are slow(≤800 km/s) CMEs. In particular, It is found that two types of CMEs are corresponding to the different types of multi-wavelength radio emissions, and to the different coronal magnetic configurations, respectively. In this paper, the producing processes of radio bursts with different types are analyzed qualitatively. The multi-polar and bi-polar magnetic structures are indicated, and they are likely to be the causes produced the two types of CMEs and the different types of multi-wavelength radio burst, respectively. The correlation between the "magnetic breakout" model for CME initiation/flare triggering and the multi-polar magnetic structure is concerned. The different velocities of CMEs may be the key factor causing different types of multi-wavelength radio bursts, and the fast or slow CMEs may be attributed to the multi-polar or bi-polar coronal magnetic structures.