本文用实例介绍了将以蒸汽为动力的驱动部分去掉，代之以电动液压驱动的动力头技术。
This paper describe a new technique that using a new power head driven dy electric hydraulic replaces the old one by steam power.
因其使用燃料而与电动、发条驱动或液压发动机而区别的机械装置。
Such a machine distinguished from an electric, spring-driven, or hydraulic motor by its use of a fuel.
为了实现燃料电池电动客车的动力转向功能，提出了直流电机通过联轴机构直接驱动油泵的电动液压式动力转向系统。
In order to achieve power steering function in fuel cell bus, an electrohydraulic system is proposed, where the pump is directly driven by a DC motor through an axis coupler.
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