bottomryn.船舶抵押契约;冒险贷借
bottomn.底部;底端adj.底部的v.触底;打(基础)
bottom protection护底
bottom-gate TFT底栅薄膜晶体管
bottom pit shield基坑支护
bottom transverse船底横向构件,船底横材,底部横材
bottom dump truck底卸卡车,底部卸料车
Bottom Experience底层经验
bottom end bearing连杆大头轴承
bottom board slope底板坡度
bottom dump bucket底卸式铲斗,底卸料斗
Bottom Bouncetrack海底反射跟踪