From the viewpoint of mathematical and economic theories, the economic water use quota was studied based on the minimum resource input and maximum output.

从数理经济学观点出发，研究了以资源边际产量为条件的经济用水定额，提出了华北地区不同水文年的各种作物经济用水定额。

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Foreign visitors can make use of the special tourist quota, but even so, you may find the train you want fully booked.

尽管游客可以有特殊旅游指标，你可能还是发现你想乘坐的火车票总是预售完毕。

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To get a report about disk and quota usage use on a file system basis detailing all users, use the repquota command, specifying the file system to report (see Listing 9).

要获得某个文件系统中详细描述所有用户的磁盘和配额使用情况的报告，可以使用repquota命令，并指定要报告的文件系统(请参见清单9)。

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Unlike single transferable vote, it does not use a quota or formula to allocate seats or posts.

BBC: The d'Hondt system explained

The use of ITQs changes this by dividing the quota up and giving shares to fishermen as a long-term right.

ECONOMIST: Fishing and conservation

This includes the use of its trade preference system, which gives Bangladesh duty- and quota-free access to markets in member states.

BBC: Bangladesh building collapse death toll passes 700