以下为句子列表：
英文: Because it was trouble to control the heavy apron type feeder's rotate speed, The paper put forward a new method to achieve control the hydraulic motor speed efficiency by control electro motor rotate speed in transducer to control the hydraulic liquid fl
中文: 摘要文章针对重型板式给矿机速度控制困难，提出了用变频器控制电机转速来控制变量泵液压油流量，以实现对液压马达速度的调节方法。
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英文: The high quality LJM series hydraulic motor is a leading product in China, which won the medal of major Science &Technology Result from the Ministry of communications and Shanghai Municipality in 1980, and was approved by ZC as a type of marine product in
中文: LJM型系列液压马达质量优越，居国内首位，1980年荣获效能部和上海市重大科技成果奖，1981年得到中华人民共和国船舶检验局船用产品形式认可，1983年荣获中国船舶工业总公司船用产品优质奖。
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