bottom n.底部a.底部的vt.给.....tank bottom 槽底...carry pepe right to the bottom 将管子放到底部...rock-bottom a.底层的,最低的...acid bottom 酸性炉底...at bottom 实际上...bottom of page 页脚页脚...bottom center 下死点...have sth. in the bottom of the bag 留下某物做为最后手段...car-bottom furnace 台车式炉...bottom layer 底层...bottom growth 底生长...touch bottom 达到最低点,深究...bottom metalization 底部金属化...bottom millstone 底石,底梁,底木...bottom chord 底弦...false bottom 假底,活底假底...bottom settlings (复数)底沉积物;脚子...left corner bottom-up 左角自底向上...sand bottom 砂底...bottom-up 自底向上...
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