以下为句子列表：
英文: At that time, Westinghouse single-phase systems employed 133-cycle current so customers would not see their incandescent lamps flickering.
中文: 然而，那时西屋的单相系统用的是133赫兹的电流，这样顾客才看不出白炽灯在闪烁。
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英文: Based on a lot of experimental data, the empirical correlations of single-phase heat transfer coefficient, condensation heat transfer coefficient and pressure drop factors are given.
中文: 根据大量实验数据，得到了计算对流换热系数、冷凝换热系数及阻力系数的经验关联式。
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英文: Because his motor required two alternating currents and four wires, it could not be merely dropped into existing single-phase AC systems; one would need to install additional wires to the network.
中文: 因为他的马达需要两道交流电与四条导线，所以没法直接用在现有的单相AC系统；电力网上还得再加装导线。
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英文: Composite power supply with single-phase &three-phase have any advantages to better economic gain and big agility, have a most important denotation to descend dissipated power.
中文: 摘要单三相混合供电具有经济性好、灵活性大的优点，对降损节能促进城乡用电同价有著十分重要的意义。
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英文: DBW,SBW series single-phase and three-phase super power voltage regultor of new age having the advantages of large capacity,high efficiency,wide range,high precision,strong protection,without wave-form distortion,reliadle operation and casy installation,e
中文: SBW系列单、三相大功率电力稳压器是我公司在参数照国际同类产品、结合我国国性的基础上研制生产的新一代节能电力稳压器，具有容量大、效率高、稳压范围宽、精度高、保护功能强、无波形畸变、运行可靠、维护简便等特点。
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