Methods Cluster sampling and random sampling Methods: Were used to choose the subject.

  • 方法采用整群随机抽样和单纯随机抽样方法确定调查对象.

  • 互联网摘选 2025-01-19 10:01:51

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