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)。

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).

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焊点疲劳寿命通常是通过电子组件进行温度循环加速试验来确定。

Solder joint fatigue life is generally ascertained through accelerated temperature cycle test on electrical subassembly.

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