The spontaneous emission from a microwave-driven four-level atom embedded in an anisotropic photonic crystal is studied.......

Cardiac valve calcification is a common disease,especially among the elderly.Calcification can affect valve function and......

It has been shown that the femtosecond laser polarization modulation is a very simple and well-established method to con......

利用图形技术实现了飞行模拟器，该系统可以模拟多个飞行目标。飞行目标的模拟是根据假设的需求，生成目标飞行航迹。系统利用Bresenha......