commercial service system meaning in English

商业服务系统

The combined substation whose technology is more mature gradually has replaced the substation of residential area and commercial service system . the combined substation has received the affirmation from users for its advantage of little occupancy , quick installation , convenient movement and little investment . so its automation level reflects distribution automation level directly
居民小区和商服系统的变电所，已逐步被技术更成熟的箱式变电站所代替，它以其占地少、安装迅速、移动方便、投资少等优点受到社会的肯定，因此箱式变电站的自动化程度的高低，直接反映了配电自动化的水平。