这个词是什么意思？
The dense rock-like part of temporal bone that contains the INNER EAR. Petrous bone is located at the base of the skull. Sometimes it is combined with the MASTOID PROCESS and called petromastoid part of temporal bone.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D010579 · MeSH 2026。
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