短語詞組短語reverse lever fulcrum pin 廻動桿支銷valve lever fulcrum shaft 閥桿支架軸dead lever fulcrum bracket 固定杠桿支點(diǎn)托架dead lever fulcrum 固定杠桿支點(diǎn)Grate lever fulcrum [鉄路]搖爐杠座control lever fulcrum 控制桿支點(diǎn)brake lever fulcrum 制動杠桿支點(diǎn)dead lever fulcrum bracket location 固定杠桿支點(diǎn)安裝麪floating lever fulcrum connecting rod 遊動杠桿支點(diǎn)連桿 返回 lever fulcrum