The characteristics of the prestressed cable and arch system and the arch-column system have been compared.

同时比较了预应力索拱体系和拱-柱体系的特点。

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Objective: to introduce a new pin and tube removable lingual arch system into the orthodontic treatment, as well its fabrication method, implication and treatment design.

目的：介绍一种新型的锁道式可摘式腭弓的适应证、制作方法、临床设计以及在临床的应用。

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Now you have a base install of Arch Linux that automatically updates and upgrades, you can install any package you care to mention on your system.

现在你已经有了一个自动更新、升级的Arch Linux基础系统了，你可以在你的系统上安装任何你想要的软件包。

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Later a transport system was added to permit people to visit an observation area inside the top of the arch.

VOA: special.2009.03.04

The company has also won high marks for its new Arch Card payment system, effectively a store credit card.

FORBES: Magazine Article

After all it was that arch-reactionary, Otto von Bismarck, who introduced the world's first welfare system, including the old-age pension, in Germany in the 1860s.

BBC: Is redistribution a foreign idea to the US?