短語詞組短語fulcrum m pin 支軸銷reverse lever fulcrum pin 回動(dòng)桿支銷float adjustment fulcrum pin 浮子軸hood fulcrum pin 罩支銷float fulcrum pin 浮子支點(diǎn)銷fulcrum pin cap 支銷蓋fulcrum pin detail 支點(diǎn)銷arm fulcrum pin 臂支銷;臂支架fulcrum pin castle nut 支銷槽頂螺母 返回 fulcrum pin