例句與造句

1. Unlike most particle physics detectors, the particles were produced not by colliding two circulating beams head-on, nor by slamming the beam into a stationary target, but by moving a thin wire target directly into the waste'halo'of the circulating proton beam of the HERA accelerator.
2. On 14 May 1976 Fermilab took its protons all the way to 500 GeV . This achievement provided the opportunity to introduce a new energy scale, the teraelectronvolt ( TeV ), equal to 1000 GeV . On 17 June of that year, the European Super Proton Synchrotron accelerator ( SPS ) had achieved an initial circulating proton beam ( with no accelerating radio-frequency power ) of only 400 GeV.
3. It's difficult to find circulating proton in a sentence. 用circulating proton造句挺難的