定子绝缘是阶级乙这些发电机是优雅的外观，严密施工，并易于维护。
Stator insulation is class B. These generators are elegant in appearance tight in construction easy maintenance.
定子绝缘是阶级乙这些发电机是优雅的外观，严密施工，并易于维护。
B. These generators are elegant in appearance tight in construction easy maintenance.
定子绝缘是阶级乙这些发电机是优雅的外观，严密施工，并易于维护。
B. These generators are elegant in appearance tight in construction easy maintenance.
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