quantum level  量子能级

Two-level Quantum System  二能级开放量子系统

Two-level quantum systems  两能级量子系统

two-level quantum wire  两能级量子线

energy level density  能级密度

Level density  能级密度; 能阶密度

Level density parameter  能级密度参数

LEVEL level  水平

level-density parameter  能级密度参数

medium density level  中间密度级

nuclear energy level density  核能级密度

nuclear level density  核能级密度; 核能阶密度

nuclear-level density  核能阶密度

sea level density  海平面密度

sound-energy flux density level  声强[度]级

Inside quantum and outside the quantum  内量子与外量子

4-level frequency modulation (4-level FM)  四电平调频

bi-level programming model with two lower level models  一主多从双层规划

coupling mechanism between upper level and low level jet  高低空急流耦合