到达设定压力时泵自动停止，压力下降时恢复工作。
Reach the set pressure pump auto stop, the resumption of work pressure drop.
泵的额定压力是指泵连续工作时的最高许用压力，而其工作压力则决定于外部负载，泵的寿命与其工作压力直接相关。
The pump is rated pressure pump work for the highest allowable pressure, but their work is determined by external pressure load, pump life are directly related to their work pressure.
石油化工设备常常是24小时连续运转，这时泵的工作压力应该取得比额定压力低得多，且工作转速也应该低于额定转速。
Petrochemical equipment is often 24-hour continuous operation, when the work pressure pump should be made much lower than the rated pressure, and speed work should also be lower than the rated speed.
作用力、泵血量和动脉粗细、弹性决定压力的大小。
The pressure is determined by the force and amount of blood pumped and the size and flexibility of the arteries.
作用力、泵血量和动脉粗细、弹性决定压力大小。
The pressure is determined by the force and amount of blood pumped, and the size and flexibility of the arteries.
本文结合实例介绍了旁通定压和二级泵系统在高层建筑空调冷水系统中的合理应用。
Connecting with example this paper introduces the rational application of bypass pressure fixing and secondary pumping system in air conditioning s cooling water system of tall buildings.
对于不频繁工作的齿轮泵，其工作压力可取为泵的额定压力，考虑到产品质量不同，最好将额定压力降低20% ~ 30%使用。
For not frequent work gear pump, the working pressure is desirable for the rated pressure of the pump, taking the quality into consideration, it is best to used pressure rated lower 20% ~ 30%.
例如：用深井泵或潜水泵直接从地下取水的用户供热系统锅炉变频定压补水系统。
For example: Diving deep-well pump or pump water directly from the ground floor of the boiler heating system users frequency constant pressure replenishment system.
对于经常工作于较高压力下的齿轮泵，其工作压力应比泵的额定压力低1 ~2个压力级。
For often work under high pressure gear pump, the working pressure shall be lower than the rated pressure of the pump 1 ~ 2 pressure level.
除了明显的泵问题(例如确保泵在设定压力下输送水)之外，其它问题也会影响工件精度。
Except for the obvious pump problems (such as make sure that the pump can feed water under the setting pressure); other problems also will affect the work piece precision.
除了明显的泵问题(例如确保泵在设定压力下输送水)之外，其它问题也会影响工件精度。
Except for the obvious pump problems (such as make sure that the pump can feed water under the setting pressure); other problems also will affect the work piece precision.
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