There exists a saddle type zone in the hydraulic moment curve of axial-flow pump blades which corresponds to the saddle zoneofdischarge-head characteristic curve of the pump.
轴流泵叶片水力矩随流量变化的关系曲线存在一个马鞍区，并与流量-扬程曲线的马鞍区相对应。
2
Using the improved ECOM model and coupling the sediment transport equation, the impacts of change of river discharge and sea level on estuarine turbidity maximum zone are studied.
应用改进的ECOM模式，耦合泥沙输运方程，研究径流量和海平面变化对河口最大浑浊带的影响。
3
For the industrial pollution sources locating in the zoneof municipal wastewater collecting system, effects of instant or accidental discharge of chemical compounds must be assessed.