求翻译：2、水系统流量控制：在负荷侧供回水主管之间设有压差控制器，通过控制旁通流量，来稳定供回水之间的压力差，维持冷是什么意思？

2, the water system flow control: a differential pressure controller between the load side of the supply and return competent, by controlling the bypass flow to stabilize for the pressure difference between the backwater and maintain cold

2, the water flow control system: the load side for the backwater is located between differential pressure controller, using the control by-pass flow, and to supply water pressure difference between maintaining the cold.

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2, water system flow control: in the load side for backwater between competent with pressure controller, by controlling the bypass flow, to maintain the stability of pressure difference between the backwater, the maintenance of cold

2nd, aqueous system flow control: Is equipped with the differential pressure controller in the load side for the backwater manager between, through the control by-pass current capacity, stabilizes for the backwater between pressure difference, maintains coldly