The gliding longitudinal wave contains three parts, longitudinal wave beam, negative exponential gliding ivro-tational wave and positive exponential gliding irrotational wave.
滑行纵波系由纵波声束、负指数滑行集散波和正指数滑行集散波三种成份所组成。
2
The beam characteristics with positive and negative branch unstable resonators were compared for end-and edge-pumped lasers.
在端面抽运和边缘抽运时，比较了正支和负支非稳腔的输出光束特性。
3
Objective To investigate the image features and clinical values of electroencephalogram(EEG)and brain electrical activity map(BEAM)for the mild brain injury without positive presentation on CT scan.