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The service and emergency brakes are powered by their own hydraulic pack .
维修停车和紧急刹车由他们自己的液压组件提供动力。
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Double Acting Centermanifold for Hydraulic Power Pack Unit.
双作用动力单元中间阀块。
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Double Acting Centermanifold for Hydraulic Power Pack Unit.
双作用动力单元中间阀块。
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