基本解釋[經濟學]鏟鬭控制閥詞組短語短語bucket main control valve 鏟鬭主控制閥backhoe bucket control valve 反鏟鬭控制閥multipurpose bucket control valve 多用途鏟鬭控制閥bucket control valve component 鏟鬭控制閥部件bucket control valve spool 鏟鬭控制閥滑閥bucket control valve更多詞組專業(yè)釋義經濟學鏟鬭控制閥