扁骨flat bone 呈板状，主要构成颅腔和胸腔的壁，以保护内部的脏器，扁骨还为肌肉附着提供宽阔的骨面，如肢带骨的肩胛骨和髋骨。 由坚硬的内板、外板及板障构成
骨可根据形状分类，有长骨、短骨、扁骨、不规则骨和含气骨。
Bones may be classified according to their shape. There are long bones, short bones, flat bones, irregular bones and pneumatic bones.
目的：评价螺旋CT三维成像技术在扁骨和不规则骨中的诊断作用。
Objective:To evaluate the usefulness of three-dimensional (3D) helical CT in the lesions of flat bones and irregular bones.
请看这个颅骨的标本，我们的颅骨由23块形状大小不同的扁骨和不归则骨构成。
Look at the skull of specimens, our skull shape and size from the 23 different flat bone and the bone structure not owned.
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