Enlarged area of spongy bone, so called because there are large, irregular Spaces of bone marrow intermixed with the bony substance.
松质骨扩展区，之所以这样称为，是因为不规则的骨髓腔隙深入到骨基质中。
The height, width and thickness of the compact substance of the buccal, lingual and inferior bony plates were measured with vernier calipers.
先用游标卡尺测定各截面的高度、宽度，以及颊侧、舌侧和下缘骨密质的厚度。
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