问题描述：
英语翻译
The rotor consists of a shaft and starshaped,laminated pole structure,exciter and fan(s) .
The shaft is machined of steel forging orround steel bar.The pole structure is manufactured of sheet steel and isshrink fitted onto the shaft.The pole laminations are pressed together withsteel bars which are welded to the end plates.The exciter rotor and the fanare shrink fitted onto the shaft and secured with a key.
The rotor consists of a shaft and starshaped,laminated pole structure,exciter and fan(s) .
The shaft is machined of steel forging orround steel bar.The pole structure is manufactured of sheet steel and isshrink fitted onto the shaft.The pole laminations are pressed together withsteel bars which are welded to the end plates.The exciter rotor and the fanare shrink fitted onto the shaft and secured with a key.
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