红色细长的丝状体是由冷却下来的气体组成，气体处于磁场中。
The red threadlike filaments are composed of cool gas suspended by a magnetic field.
其必须冷却到50微K，以尽可能的减小热振动，因为热振动会干扰悬臂的磁场，而这个磁场又是产生位移信号的关键。
The system must be cooled to 50 millikelvins to minimize thermal vibrations, which interfere with the cantilever’s magnet-induced displacement signal.
为了将原子冷却至接近绝对零度，物理学家倚靠的是雷射及磁场组成的系统来局限原子。
To cool atoms to near absolute zero, physicists rely on systems of lasers and magnetic fields to trap atoms.
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