氖、氩、氪都能够通过分馏液态空气获得。
K. Neon, argon, and krypton are obtained from fractional distillation of liquid air.
液态空气：处于液体状的空气，呈蓝色，极度冰冷，通过冷却和压缩而成。
Air in its liquid state, intensely cold and bluish, obtained by cooling and compression.
在环境温度中从液态转变到气态，液态空气产生的能量仅为冷却这些空气消耗能量的50%。
Only 50 percent of the energy that went into cooling the air is returned when exposed to ambient air temperatures.
在环境温度中从液态转变到气态，液态空气产生的能量仅为冷却这些空气消耗能量的50%。
Only 50 percent of the energy that went into cooling the air is returned when exposed to ambient air temperatures.
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