软骨改变：脱位侧大部分股骨头软骨边缘欠光滑；
Cartilaginous changes: The femoral head cartilage lacked smooth in most of dislocated hips.
结论无肿瘤病史时，发现双侧卵巢肿瘤尤其内有光滑无回声时应想到转移瘤的可能。
Conclusion Ovarian metastasis should be included in the differentiated diagnosis of ovarian masses, it was characterized by well defined masses with smooth hypoecho findings in bilateral ovaries.
三组对照侧大鼠膝关节的关节软骨都为淡蓝白色，表面光滑而有光泽。
ResultsThe cartilages of control knees in three groups were slightly white - blue, smooth and sheen.
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