The procedure of electric and hydraulic signal exchange can be controlled by the application of proportional technique, and work circle can be fulfilled conveniently, rapidly and accurately.
应用比例技术能使电液信号转换过程可控，采用比例阀可以方便、快捷、精确地完成工作循环过程。
This paper describe a new technique that using a new power head driven dy electric hydraulic replaces the old one by steam power.
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.
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。
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