The hydraulic drive motors keep the XD pulling low slump concrete and riding smoothly over chaired rebar and other obstacles.
液压驱动马达保持了XD拉低低迷具体主持骑顺利，钢筋和其他障碍。
The hydraulic drive motors keep the XD pulling low slump concrete and riding smoothly over chaired rebar and other obstacles.
液压驱动马达保持了XD拉低低迷具体主持骑顺利，钢筋和其他障碍。
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