direct current (hvdc) transmission links from siemens, with a voltage rating of up to kilovolts, maximize efficiency, particularly when transporting power over great distances. compared to three-phase ac overhead lines, they cut losses by to percent. a direct current overhead line requires a percent...
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-which are added in the case of mix-fuel domestic kilns (burning of coal with limestone). ceramics our main produces are zirconia ceramic, wearable ceramic, insulating ceramic, spin ceramic, single hole, lacunaris ceramic, ceramic tube, and other special type ceramic. they are widely used in ceramic...
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