overfall怎么记

To avoid the damage to economization coal implement resonance in running, the theory that flowing liquid causes the vibration is applied to analyse that the vortices break frequency and overfall vibration frequency should be avoided in the course of ash blow and dust removal.

为了避免锅炉省煤器在运行中产生共振引发的危害，应用流体诱发振动的原理分析了在吹灰除尘过程中应尽力避开漩涡脱落频率fw与湍流抖振频率fb的观点。

During the operation of hot press, because there was hysteresis characteristic in the proportional overfall valve, the regular control of press was not very clear, we used "PID-FUZZY" control policy for the hot press, got good results from the simulation operation.

针对实验压机运行过程中存在的由比例溢流阀的滞环效应所引起的常规控制方式对压力控制效果差的问题，采用PID-FUZZY控制策略对热压压力进行调节，模拟运行并取得了良好的效果。

The fluid streamline and pressure distribution and velocity vectogram of the flow in hydrocyclone are given in this paper, and the effects of variation in parameters ( flow rate, inlet pressure and diameter of overfall pipe) on separation efficiency are studied.

通过数值计算得到了水力旋流器内流体流动的流线图、等压线以及速度矢量图，并且研究了不同参数（分流比、进口压力以及溢流管直径）对分离效率的影响。