concealed door (jib door)
动臂起重机
jib crane【机】;shear leg crane【机】;whip crane【机】
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相关词条
jib crane adapted for attachment to standard vehicles
jib
spreader boom (spreader jib) open-pit mining
jib
mobile crane with box section jib【机】
boom【机】;luffing jib【机】
wall creeper type jib crane