Based on the experiments a appropriative compound cleaner HS-906 for the cleaning of opened recirculation cooling water system of central air-conditioner system was developed.
通过大量的试验研究，研制出适用于中央空调系统敞开循环水系统不停车清洗的专用复合清洗剂hs - 906。
WAS condenser, appropriative VK catalyst and the system of heat recycling were introduced in detail.
详细介绍了WSA冷凝器、专用VK型催化剂及热量回收系统。
Taking appropriative train test line of Guangzhou metro line 2 as an example, this paper introduces the equipment, function and characters of signal system and service conditions of interfaces.
以广州地铁2号线的专用试车线为例，分析其信号系统的设备概况、功能及特点，介绍各接口的使用情况。
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