• 目前为止地质数据抽样检查基本上采用百分比抽样方案及简单随机和分层抽样方法

    However, percent sampling has been mainly used for sampling inspection of geological data till now.

    youdao

  • 目前为止地质数据抽样检查基本上采用百分比抽样方案及简单随机和分层抽样方法

    However, percent sampling has been mainly used for sampling inspection of geological data till now.

    youdao

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