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航空航天工业部第634所系统工程部在1990年新开发了通用型系列化摆动式液压马达,其排量为30～1000mL/rev;转角范围90°、180°、270°;单双叶片两种结构,共计24种规格。
Department of Aerospace Industry, Department of Systems Engineering, No. 634 in 1990 developed a new series of universal swing hydraulic motor, the displacement of 30 ~ 1000mL / rev; corner range of 90 °, 180 °, 270 °; single double leaf two Structure, a total of 24 kinds of specifications.