The cryogenichelium pressure regulator is one of the most difficulty valve in cryogenichelium pressurizing technique which is applied first in LM3A rocket of China.
长三甲火箭在国内率先采用了冷氦增压系统，冷氦压力调节器是冷氦增压系统中的最关键阀门之一。
2
The space environment, combined with mechanical and cryogenic refrigeration systems using hydrogen and helium, chill the coldest instruments to 0.1 kelvin in four sequential steps.
利用太空的环境，以及机械和氢和氦的冷冻系统，分4个步骤把这个最冷的仪器冷却到只有0.1开尔文。
3
Most commercial helium is recovered from natural gas through a cryogenic separation process.