The water cooling system means that water is used as a cooling agent to circulate though the engine.

水冷却系统是以水作为冷却介质用以在发动机中循环。

The fan can change the environment temperature without environment pollution caused by chemical cooling agent.

没有化学制冷剂对环境的污染；

This product use special-purpose materials, bear cooling agent, against oil, grinding wheel froth and iron filings and so on;

该产品使用专用的材料，耐冷却剂、防油、砂轮沫和铁屑等等；

Topical patch preparations that contain an odorless physiological cooling agent, and methods for using the same are provided.

提供了含有无气味生理降温剂的局部贴剂及其使用方法。

The research provides a novelty way of developing a new type of cooling agent and evaporative cooling transformer, and has a certain theoretical and practical signification.

本研究为开发新型制冷介质和研制蒸发冷却变压器提供了一条新颖的途径，具有一定的理论与实践意义。