目的：研究300名正常白族人指嵴纹数和t三叉，为医学、遗传学、人类学提供正常参数。

Objective: to study the finger ridge count and t triangle of 300 normal people of Bai Nationality, and to provide normal parameters for medicine, genetics and anthropology.

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因为跑了很长的里程数，每个轮胎都磨损了而且胎纹深度都变的很浅了。

Because of long mileage, every tire wears away and the tread pattern depth becomes very shallow.

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有丝分裂早中期至中期两个不同时期G-带带纹总数减少36％，染色体组的绝对长度缩短25％，带数减少的幅度大于染色体长度缩短的幅度。

The total number of G-bands was reduced by 36 percent, the absolute length of chromosome complement was contracted with 25 percent when cell mitosis proceeded from prometaphase to metaphase.

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