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rock shaft lift arm /ˈɹɒk ˈʃaft ˈlɪft ˈɑːm/ n

中文：提升臂

中文 · 提升臂Español · brazo de elevación del árbol oscilanteFrançais · bras de relevage
Meaning：Part controlled by the hydraulic cylinder that raises and lowers a tool by means of the lifting link and the draft link.
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