针对数控机床可靠性研究中数据抽样问题进行了研究。

The data sampling method of NC machine's reliability is studied.

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请注意，只对表数据页进行抽样，而不是索引页。

Note that only the table data pages and not the index pages are sampled.

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抽样方法比较适合于对大型数据库的挖掘。

Sampling method is suitable for the mining to large data base.

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注：本表数据为抽样调查数。

Note: Data in this table are estimated from sample surveys.

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注：本表数据为抽样调查数。

Note: Data in this table are estimated from sample surveys.

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