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roof jack
exhib. 帐篷的撑顶杆
mount. 帐篷撑顶杆; 顶板螺旋千斤顶
tech. 液压顶柱; 临时钢支柱; 千斤顶支柱; 顶部支柱
roof-jack ['ruːfdʒæk]
gen. 帐篷的撑顶杆; 烟囱的出烟孔