Meanwhile, the cooling system that circulates superfluid helium around the LHC's accelerator ring keeps the machine at minus 271.3 degrees Celsius (minus 456.34 degrees Fahrenheit).
与此同时，冷却系统使环超流氦沿对撞机的加速环循环，使其温度保持在零下271.3摄氏度(零下456.34华氏度)。
Oil and air lubrication casting tools: the machine manufactured precisely with imported materials, the mold cooling stave fit closely with graphite ring, to ensure oil and air sealing effect.
油气滑铸造工装，采用进口材料精密加工，结晶器冷却壁与石墨环紧密贴合，确保油、气密封效果。
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