Based on the thermoelectric refrigerationprinciple and PID parameter self-tuning control technique, a temperature controller for semiconductor laser's environment test is designed.
基于热电制冷原理和PID参数自整定理论,本论文设计了一种半导体激光器环境的温度控制仪。
2
Freeze dryer USES this principle by dried compressed air refrigeration technology.
冷冻干燥机就是利用这一原理采用制冷技术干燥压缩空气的。
3
According to the Performance Analysis of overcooled refrigeration cycle, it shows the operation principle of the system.