Any problems relating to the design of dry or oil - filled electric motors immersed in the product have been overcome and the shaft passage and cable gland sealing systems in use today have proved highly satisfactory in a wide range of applications 干式或油浸式转子设计的有关问题已被攻克,目前所使用的轴和电缆填料密封系统已被证明在各种工况下是十分满意的。