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数学
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muscles in the human body
a.over200
b.over350
c.over600
人气:176 ℃ 时间:2020-04-09 06:58:11
解答
muscle肌肉C健康男女老幼人体全身的肌肉共有639块.约由60亿条肌纤维组成,其中最长的肌纤维达60厘米,最短的仅有1毫米左右.大块肌肉有2000克重,小块的肌肉仅有几克.一般人的肌肉占体重的百分之35--45.肌肉内毛细血管的...
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