  Based on the DEMETER satellite, we found two space wave-particle coupling
events during February 2010 taking place in the range of McIlwain parameter
$L$($1.27\sim1.37$). There are strong spatial and temporal correlation between
the particle bursts(PBs) and the electromagnetic disturbances of the coupling
events. The two PBs show different energy spectrum characteristics, while the
corresponding electromagnetic disturbances concentrated on different
frequencies range. In agreement with the prediction of the theory of
wave-particle interaction, we conclude that the two wave-particle interactions
can be probably explained as following: one is electron dominant precipitation
with energy of $0.09\sim0.2$ MeV induced by VLF electromagnetic wave with the
frequency of $14\sim20$ kHz, and another is proton dominant precipitation with
energy of $0.65\sim2.85$ MeV induced by VLF electromagnetic wave with the
frequency of $\le 100$ Hz. For the first time, those particle bursts origin,
from electron or proton detected by the Instrument for the Detection of
Particles(IDP) on board, is inferred by theory calculation, although the
Instrument has no ability to identify the particle species.
