velocity decrement的意思|示意

The results show that group-velocity mismatching is the main reason of the broadening of the second harmonic pulse and could lead to the decrement of conversion efficiency.

研究结果表明，群速度失配会导致二倍频光脉冲宽度的增大和转换效率的降低，非线性相位调制使二倍频光脉冲形状发生畸变，降低转换效率。

Electrophysiological, there were sensory conduction velocity slowing, amplitude decrement of nerve action potentials, abnormal spontaneous activities and increased polyphonic motor unit potentials.

神经电生理检查显示神经传导速度减慢，波幅降低，异常自发电位(纤颤电位和正锐波)，运动单元多相电位增加。