The pumpoperatingpoint is abnormal to normal operating point, that extra point.
此工况点正常也是水泵畸形作业点，即额外点。
2
The authors point out that only after selecting rational operating mode and control mode of pump unit can the safe and steady operation of pipeline be ensured.
提出只有选择工艺合理的泵机组运行方式和控制方式，才能实现成品油管道的安全平稳运行。
3
Through calculating friction factor and operatingpoint of pump or fun of two examples on fluid mechanics, methods using solver and curve-fitting in EXCEL were introduced.