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電動機的機械專用電機功率計算方法。
電動機的功率．應根據(jù)生產(chǎn)機械所需要的功率來選擇，盡量使電動機在額定負載下運行。選擇時應注意以下兩點： (1)如果電動機功率選得過小。就會出現(xiàn)“小馬拉大車”現(xiàn)象，造成電
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