A refrigerant system is provided with at least two stages of compression connected in series.
提供了一种制冷系统，其具有至少两个串联连接的压缩级。
A heat storage tank was connected in series with the water loop to improve the system running characteristics.
在水环热泵空调系统中有串联在水环路上的蓄热水箱来改善系统的运行特性。
China's sports facilities system consists of a series of connected factors including the quantity, the type, the scale, the equipment, and the distribution of the facilities, and so on.
中国体育设施体系由体育设施建设中一系列互相联系的因素所组成，其中包括体育设施的数量、种类、规模、装备和布局等。
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