LEVEL level  水平

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

coupling of high level jet and Low level jet  高低空急流耦合

Digital Signal Level 0- Digital Signal Level 3 DS0-DS3  零阶数字信号和三阶数字信号

fiscal system at county level and township level  县乡财政体制

four-energy-level laser (=four level laser)  四阶雷射

high-level and low-level jet  高低空急流

interaction between upper level and lower level  高低空相互作用

level by level analysis method  层次分析法

Level by level learning  逐层学习

level controller level regulator  液位调节器

Level of attention or attention level  注意层

level to level alignment  层间对准

level to level design method  分层设计

level-by-level reasoning  层次推理

level-to-level teaching  分级教学

municipal level and county level  市、县级