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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In similar fashion to the euro zone, a core group could advance under the union's provisions for "enhanced co-operation".

采用了和欧元区类似的风格，核心组可以在欧盟“增强合作”的规定下取得进展。

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"There's a very poetic beauty in that, in that kind of urban war zone Americana that is not really known, not really talked about, not really seen, and yet it is part of the spine of America."

VOA: special.2010.06.21

And this looks a lot like the average valence electron energy where the lowest values of electronegativity are in the metallic zone and the highest values of electronegativity are on the nonmetallic zone.

这看起来像是平均电子能,最低的电负性在,金属区最高的电负性在,非电子区。

麻省理工公开课 - 固态化学导论课程节选

A lot of people here think of Lebanon as the Middle East, as like a war zone.

许多人把黎巴嫩当成中东，就好像一个战区一样。

在黎巴嫩开派对 - SpeakingMax英语口语达人

He is engaging in enterprising reporting from the vantage point of Evacuation Zone A. Stay safe, Ray.

FORBES: Cars and Hurricanes

Below the convective zone lies a radiative zone, which is a calmer region, where photons transport the Sun's energy outward.

BBC: Sun, Trace

This would help advance the Lisbon Agenda and foster the deeper economic integration necessary to make the euro zone a sustainable currency area.

ECONOMIST: When growth and social protections clash | The