The conclusions we draw can also play a directive role in highway double-arc tunnel construction.

所得结论对公路双连拱隧道的建设有重要的工程指导意义。

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The regularity of stress and strain of surrounding rock and support structure when using(3-heading) excavation method to construct double-arc tunnel is carried out by FEM numerical method.

应用有限元数值方法，对连拱隧道“三导洞法”施工时围岩和结构的受力、变形规律进行了分析。在两正洞拱部施工的时候，左右洞拱顶沉降约占最终沉降的70%。

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Arc heater system is the most important component of plasma wind tunnel.

电弧加热器系统是电弧等离子体风洞最重要的组成部分。

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But they are all clustered around Gotham, right where the ARC tunnel would have been.

FORBES: Chris Christie and the Highway Spenders

An issue not addressed in the study is one New Jersey Mr. Christie cited in killing the ARC tunnel, the move that gave rise to interest in the No. 7 train solution in the first place: cost.

WSJ: N.J. Subway Idea Lives