内底横骨 inner bottom frame

横骨架式 transverse framing system ; transverse framing ; transverse system ; transverse frame system

船底横骨 bottom frame ; bottom transverse

上横骨 sternal notch ; manubrium of sternum

横骨架式双层底结构 transversely framed double bottom construction

横骨架式船 transversely framed ship

横径狭窄骨盆 transversely contracted pelvis