龙骨: a bird's sternum fossil frag ...底: bottom; base长: older; elder; senior龙骨底板: shoe龙骨底吃水: keel draft龙骨底链: bottom chain主龙骨底角材: bottom keel angle内龙骨底部曲线: cutting-down line袜底长: sole length楦底长: length of last sole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船底长桁: bilge stringer底长石砂岩: basal arkose司机室底长: l bottom length of cab足底长韧带: ligament plantare longum; ligamentum plantare longum; long plantar ligament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基底长石砂岩: basal arkose第一掌骨底: base of first metacarpal舌骨底舌肌: musculi basioglossus