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1˜Ç  °l±íÓÚ: 2017-10-02 08:43
I = E/R = 380/54 = 7

†Î P = 380*7 =2.66KW

Èý P =/3 * E*I = 1.7*380*7 = 4.5KW

18/3 =6 ½M

¿‚ P = 4.5 * 6 = 27 KW

ÒòËíµÀ t+œØ¿Ø => Ö»ÓÐÒ»é_ʼ•þÓÐ27KW ,ÒÔááֻʣϾS³ÖµÄ¹¦ÂÊ¡£

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