Methods Thirty lumbers of human spine were used, all of which came from male ( the mean age 27. 35 years).

  • 方法:采用人的新鲜的L1-L5标本共计30个,均为男性,年龄21-35岁,平均27.3岁。

  • 互联网摘选 2025-01-19 22:23:15

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句