沙丘内部发育有高角度板状交错层理、低角度楔状交错层理等层理构造。
High Angle tabular cross bedding and low Angle wedge cross bedding are generally found on the cross section of the dunes.
其中，所述刀片组件和所述楔可以被收容在对应的槽中，使得所述板状刀片的切削部分从所述开口突出；
In addition, the blade assembly and the wedge can be accommodated in the groove such that a cutting portion of the blade projects towards the opening.
结果2 6例盘状半月板中，2 5例为外侧盘状半月板，只有1例为内侧盘状半月板，18例为厚板型，8例为楔型。
Results Of 26 discoid menisci, 25 were in lateral and only one was in medial. Besides, 18 were classified as slab type and 8 wedge type.
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