Kugwedezeka kwa injini ndi chimodzi mwazinthu zomwe zimagwiritsidwa ntchito pakalipano.Ndiye, kodi mukudziwa chifukwa chake zida zamagetsi monga ma motors zimagwiritsa ntchito 50Hz alternating current m'malo mwa 60Hz?Mayiko ena padziko lapansi, monga United Kingdom ndi United States, amagwiritsa ntchito 60Hz alternating current, chifukwa ...
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