cold cores 中文意思是什麼
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All cores are made of high quality low loss grain - oriented cold rolled silicon steel with 45mitre joints and stepping construction to decrease the not - load losses, it has small exciting current
全斜接縫，步進疊裝結構，空載損耗降低約20 % ，激磁電流小。 -
Ice cores contain evidence that sudden cold periods occurred after the north atlantic became less salty, perhaps because freshwater lakes burst through the walls of glaciers and found their way to the sea
冰心內的證據顯示，北大西洋水體鹽度降低后驟冷時期才開始，這或許是由於淡水湖的水沖破冰河築成的屏障流入海中所致。
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