低阈值基横模脊形波导GaAs/AlGaAs单量子阱激光器
Low Threshold Single Transverse Mode Ridge Waveguide GaAs / AlGaAs Quantum Well Lasers
腰椎10块,横突、脊突均发达;
The lumbar vertebrae amount to 10 , and the spinous process and transverse process are larger than the others ;