The production of low temperatures or the study of low-temperature phenomena.
低温学：以低温现象为研究对象的学科。
A branch of electronics concerned with the study and application of superconductivity and other low-temperature phenomena for electronic devices and systems.
电子学的一个分支，研究超导和其它低温现象及它们在电子设备和系统中的应用。
Aiming at the facts of low temperature, rare oxygen and low-pressure, ameliorates phenomena of burner igniting difficulty , unsteady flame and incomplete burning by improving on burner's parts.
针对高原地区低温、缺氧、气压低的客观现实，通过对轻油燃烧器结构的改进，解决了燃烧器点火困难、火焰不稳定及燃烧不完全问题；
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