提升臂
/ˈɹɒk ˈʃaft ˈlɪft ˈɑːm/
n
English: rock shaft lift arm · 提升臂
English · rock shaft lift armEspañol · brazo de elevación del árbol oscilanteFrançais · bras de relevage
释义：Part controlled by the hydraulic cylinder that raises and lowers a tool by means of the lifting link and the draft link.