其理由是桶焊机除了需要产生缝焊的实际功率之外，还需要大量的无效功率。
The reason is that Drum welding machines require a large amount of 'reactive power' in addition to the 'true power' required to make the weld.
此无效功率产生的磁场对诸如运行的焊接变压器和电机的感应电器设备来说是重要的。
This reactive power generates the magnetic fields which are essential for inductive electrical equipment such as the welding transformer and electric motors to operate.
这种手术成功率高，但需要开胸操作，所以往往只适合于那些其他治疗无效的患者。
The procedure has a high success rate, but because it requires open-heart surgery, it's usually reserved for people who don't respond to other treatments.
该算法在目标误码率下，通过功率的优化配置，关闭无效的子带。
The algorithm closes the inefficacy sub-band by power optimization, and reduces the length of channel impulse response by chosen feedback filters.
其次分析了ZDPM中浓盘磨机有效打浆功率及无效打浆功率，探讨了ZDPM中浓盘磨机的有效打浆功率及比能的确定方法。
Analyze the useful part and useless part of ZDPM refiner beating power. The identifying method of net power and specific energy are discussed.
从互易性偏置调制的机理出发，将对本征频率的测量转化为对无效调制光功率响应的尖峰脉冲的测量；根据光功率响应机理，将对半波电压的测量转化为求有效调制光功率最小值。
The method comes from the mechanism of reciprocal shift modulation, which transforms the measuring of eigenfrequency into measuring the spike pulse responding to ineffective-modulation optic power.
从互易性偏置调制的机理出发，将对本征频率的测量转化为对无效调制光功率响应的尖峰脉冲的测量；根据光功率响应机理，将对半波电压的测量转化为求有效调制光功率最小值。
The method comes from the mechanism of reciprocal shift modulation, which transforms the measuring of eigenfrequency into measuring the spike pulse responding to ineffective-modulation optic power.
应用推荐