concealed door (jib door)
起重机悬臂
jib boom【机】
暂无补充释义。
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