环保节能加水系统，高吸程功能和多级减震技术。
Energy Saving water device system, long-distance suck technology and multi-level shock absorption technology.
三根互相啮合的螺杆，在泵缸内按每个导程形成为一个密封腔，造成吸排口之间的密封。
Three mutual engagement of the screw in the pump cylinder for each lead of the formation of a sealed chamber, causing the seal between the suction mouth.
继电器寿命是表征继电器可靠性的重要指标，超程时间和吸合时间是表征继电器寿命的重要特性参数。
The life of the relay is a major index to indicate the reliability of relay. Super-path time and pick-up time are important characteristic parameters to indicate the life of relay.
要有效地控制火灾产生的烟气，就必须了解烟气在地铁站内的蔓延规律和沿程质量卷吸特性。
To effectively control the fire-induced smoke. it is necessary to get acquainted with the smoke movement and entrainment characteristics along the subway station.
要有效地控制火灾产生的烟气，就必须了解烟气在地铁站内的蔓延规律和沿程质量卷吸特性。
To effectively control the fire-induced smoke. it is necessary to get acquainted with the smoke movement and entrainment characteristics along the subway station.
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