Convention, Volume 2;Volume 38;Volume 54 |
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Halaman 105
... energy supply the committee declared that where suitable central - station service is available it will be found more economical and more reliable for the railroad company to pur- chase its energy supply than to attempt to generate ...
... energy supply the committee declared that where suitable central - station service is available it will be found more economical and more reliable for the railroad company to pur- chase its energy supply than to attempt to generate ...
Halaman 110
... energy for pumping water out of sewer trenches which the contractor is digging for a large sewer - pipe system ... energy to low - voltage energy for the motors operating the pumps . Portable cables , 2000 ft long , are used to transmit ...
... energy for pumping water out of sewer trenches which the contractor is digging for a large sewer - pipe system ... energy to low - voltage energy for the motors operating the pumps . Portable cables , 2000 ft long , are used to transmit ...
Halaman 233
... energy is developed from water power far removed from where the product is used , it has been found desirable and economical to concen- trate the points of production . Very large amounts of electrical energy are now produced , whether ...
... energy is developed from water power far removed from where the product is used , it has been found desirable and economical to concen- trate the points of production . Very large amounts of electrical energy are now produced , whether ...
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