【运输】转臂式起重机【运输】臂架型起重机

jib crane【机】;shear leg crane【机】;whip crane【机】

concealed door (jib door)

jib crane adapted for attachment to standard vehicles

jib

spreader boom (spreader jib) open-pit mining

jib

boom【机】;luffing jib【机】

telescope jib (sliding jib)