The chip can be cooled with liquid nitrogen or even liquid helium, but this requirement complicates the apparatus considerably. 一種是利用液態氮或液態氦來冷卻晶片，但這會讓儀器變得複雜許多。
They use liquid nitrogen to burn warts off of fingers. 他們使用液氮把手指上的瘊子冷凍掉。
The relation between the start pressure and the consumed amount of liquid nitrogen is studied and the optimum start pressure is obtained. 分析了該冷阱的啟動壓強和液氮消耗量，得到了最佳的啟動壓強。
