本文报导了在液氮温度范围内进行的微波受激发射的实验现象，工作物质是铬离子浓度为0.1％的人造红宝石。
An experimental observation on stimulated emission of radiation at liquid nitrogen temperature is reported. The paramagnetic material is synthetic ruby with about 0.1% chromium in Al2O3.
本文报导了在液氮温度范围内进行的微波受激发射的实验现象，工作物质是铬离子浓度为0.1％的人造红宝石。
An experimental observation on stimulated emission of radiation at liquid nitrogen temperature is reported. The paramagnetic material is synthetic ruby with about 0.1% chromium in Al2O3.
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