龙骨: a bird's sternum fossil frag ...底: bottom; base链: chain龙骨底板: shoe龙骨底长: tread龙骨底吃水: keel draft主龙骨底角材: bottom keel angle内龙骨底部曲线: cutting-down line卧底链: ground cable龙骨: 1.(鸟类的胸骨) a bird's sternum2.[中药] fossil fragments3.(船只、飞机、建筑物等的支撑和承重结构) keel◇龙骨板 keel plate; 龙骨底板 shoe; 龙骨木 rising wood; 龙骨线 keel-line; 龙骨线脚 [建筑] keel molding; 龙骨翼板 garboard; garboard strake耙网翻底链: tickler荐骨底: basis ossis sacri掌骨底: base of metacarpal bone; basis metacarpalis; basis ossis metacarpalis指骨底: base of phalanx; basis phalangis digitorum manus趾骨底: basis phalangis digitorum pedis镫骨底: base of stape; basis stapedis跖骨底: base of metatarsal bone; basis metatarsalis; basis ossis metatarsalis骶骨底: base of sacrum,base of sacral bone; basis ossis sacri第一掌骨底: base of first metacarpal舌骨底舌肌: musculi basioglossus枕骨底部: basioccipital; pars basilaris ossis occipitalis枕骨底部的: basioccipital足底,跖,镫骨底: base of stapes杓状软骨底: base of arytenoid cartilage; basis cartilaginis arytaenoideae; basis cartilaginis arytenoideae镫骨底板钩: hook for stapes foot-plate