南方的学校设备较好，而北方的则相对差一些。

School in the south are better equipped, while those in the north are relatively poor.

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浅层气井日产气量相对低于深部气井，日产水量较大，生产压差大；

The shallow gas wells have lower production than the deep wells, and have large water production.

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方法的相对标准差低于3%。

Relative standard deviation of this method is below 3 %.

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方法的相对标准差低于3%。

Relative standard deviation of this method is below 3 %.

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