除非图面中另有说明，所有的镜头为一级面。

All lenses are Class 1 unless otherwise specified on part drawing.

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一级面：每天基本固定可见，这些包括(但是没有限制)计算机和显示器的上面和前面。

Class 1 Surface: Visible on a constant, daily basis. This includes, but is not limited to, the top and front of a computer or the CRT of a monitor.

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另一方面，大多数LHC的合作实验和院校都有国家级或地区级计算设施的使用权。

On the other hand, most of the laboratories and universities collaborating on the LHC had access to national or regional computing facilities.

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