在不同负荷、不同季节和不同环境温度下，制冷机组的冷却塔风机恒速运行无法使冷却水温度控制在需要范围内。
The temperature of cooled water could not be maintained in a desired range by a fan running at constant-speed in a cooling tower under different loads and environmental temperatures.
工业制冷机组是在温度、压力变化范围较大、转速较大的情况下运行的。
Industrial refrigeration unit is big changes in temperature and pressure range, running speed of the larger situation.
运行结果表明，该电源各项性能指标能满足设计要求，具有防雷击、适应温度范围广和成本低的优点。
Experimental results show that the switch power supply has good performance in anti lightning strike, wide temperature range and low cost.
应用推荐