Through division of constraint conditions of units into security operation zone and non-security operation zone, a new model for internal economic operation is proposed.

通过划分机组的约束限制条件为安全运行区和非安全运行区，提出了一种基于开关控制策略的厂内经济运行模型。

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A new international economic division is under way. Its operation rules and the resulting influence are gradually infiltrating into enterprises.

新的国际分工正在形成，其运作规则及产生的影响，正逐渐向企业渗透。

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The requirements for such co-operation, and hence for modern economic life, which is founded on specialisation and an infinitely elaborated division of labour, are more demanding than you might suppose.

ECONOMIST: Economics focus