This weekend's test will mark CERN's first attempt to feed protons (or, simply, "beam") into the LHC from a chain of smaller accelerators.
本周末的测试标志着CERN首次通过一系列小型加速器将质子(或简称为“束”)导入LHC。
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It USES the GPS and digital compass built into many phones and tablets to mark these sites directly on a live feed displayed on the device's screen-a technique known as augmented reality.