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锟斤拷锟侥拷(d锟斤拷ng)前位锟矫ｏ拷锟斤拷锟 >>锟斤拷聞锟結訊 >>锟絘(ch锟斤拷n)品知锟絉(sh锟斤拷)
锟斤拷锟铰時(sh锟斤拷)锟絞锟斤拷2019/12/11 9:26:45
锟接燂拷锟斤拷锟斤拷锟斤拷谓臃锟斤拷锟斤拷锟斤拷谓臃锟斤拷锟斤拷锟斤拷锟斤拷锟接(j锟斤拷)锟姐？
锟斤拷電加燂拷锟锟斤拷锟絙锟接撅拷锟絩(sh锟斤拷)锟斤拷锟杰讹拷蛻锟斤拷锟(hu锟斤拷)锟斤拷詢锟紷锟斤拷(g锟斤拷)锟斤拷锟斤拷锟斤拷途锟斤拷锟斤拷锟角讹拷锟劫ｏ拷锟杰讹拷蛻锟(du锟斤拷)锟接燂拷锟锟斤拷谓泳锟斤拷锟斤拷锟斤拷計(j锟斤拷)锟姐都锟斤拷一知锟斤拷猓拷锟斤拷锟斤拷S锟街就給锟斤拷锟斤拷锟斤拷锟斤拷录訜锟斤拷锟节诧拷同锟接凤拷锟斤拷锟斤拷r锟斤拷锟斤拷锟斤拷锟斤拷計(j锟斤拷)锟姐？
1锟斤拷锟斤拷锟饺帮拷锟斤拷锟斤拷锟轿的接凤拷锟斤拷锟斤拷锟斤拷電燂拷锟斤拷锟街э拷锟揭伙拷M锟斤拷锟斤拷位锟斤拷锟紹锟斤拷锟斤拷锟斤拷锟斤拷锟轿狅拷泳锟斤拷锟斤拷@锟接接撅拷锟皆达拷锟380V锟斤拷锟接燂拷艿膯锟街伙拷~锟斤拷電夛拷也锟斤拷380V锟斤拷
锟斤拷锟斤拷锟絞電夛拷E锟斤拷锟斤拷锟斤拷電夛拷EP
锟斤拷锟斤拷锟絞锟斤拷锟絀P=E/R
锟洁功锟斤拷PP=E^2/R
锟斤拷锟斤拷锟斤拷P锟角革拷锟洁功锟斤拷之锟斤拷P=3PP=3E^2/R
锟斤拷锟斤拷锟斤拷蔷锟斤拷锟斤拷锟斤拷3锟斤拷
2锟斤拷锟斤拷锟轿接凤拷锟斤拷锟斤拷锟皆达拷锟380V锟斤拷锟斤拷只锟接燂拷艿锟斤拷~锟斤拷電夛拷锟斤拷220V锟斤拷锟斤拷支锟接燂拷艿母锟揭伙拷泳锟斤拷锟斤拷B锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟皆
锟斤拷锟斤拷锟斤拷锟斤拷锟接(j锟斤拷)锟斤拷锟斤拷锟铰ｏ拷
锟斤拷锟斤拷锟絕锟斤拷詳锟斤拷(x锟斤拷)锟侥斤拷B锟斤拷锟斤拷锟斤拷锟斤拷卤锟斤拷^锟斤拷(f锟斤拷)锟絪锟斤拷锟斤拷锟接(j锟斤拷)锟姐，锟斤拷锟斤拷锟斤拷锟斤拷锟接(j锟斤拷)锟姐，锟斤拷電加燂拷锟锟斤拷锟絙锟接撅拷锟絩(sh锟斤拷)锟斤拷(du锟斤拷)锟絰锟斤拷電撅拷锟斤拷锟斤拷锟絖锟饺撅拷锟斤拷锟斤拷锟斤拷锟斤拷(j锟斤拷)锟斤拷
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