same-phase

When adopting the fully controlled 3-phase thyristor rectifier as the key component of the power source, the mathematical model and the working theory of the power source are similar but not the same as the rectifier used in HVDC.

当选用3相全控整流桥做为试验装置电源电路的核心部件后，其数学模型、工作状态虽类似于整流桥，但又不能直接套用。

It is pointed out that KDF-1 vesicant suits for preparing coal ash three-phase froth with high blowing ratio, long settling time, at the same time, the optimum concentration of KDF-1 vesicant while it is used in foaming is given in the paper.

指出KDF-1发泡剂适合制备发泡倍数较高、稳定时间较长的煤灰三相泡沫，给出了KDF-1发泡剂用于浆液发泡的最佳浓度。

Application of the algorithm ensures that the result of Ucos φ is accurate, convergent and the true expressions of the voltages and currents in the site of relay when power swing and three-phase short-circuit fault happens at the same time.

用此算法求出的Ucosφ数值精度高，收敛性好，更真实地反映了电力系统振荡过程中发生三相短路时保护安装处电压和电流的变化；