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Power transmission is the movement of energy from its place of generation to a location where it is applied to performing useful work. Power is defined formally as units of energy per unit time. In SI units: : Since the development of technology, transmission and storage systems have been of immense interest to technologists and technology users. == Electrical power == (詳細はresistive loss in the Conductor (material)ion. Power transmission is usually performed with overhead lines as this is the most economical way to do so. Underground transmission by high-voltage cables is chosen in crowded urban areas and in high-voltage direct-current (HVDC) submarine connections. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Power transmission」の詳細全文を読む スポンサード リンク
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