• 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.

    本文报导了液氮温度范围内进行的微波受激发射实验现象工作物质铬离子浓度为0.1%的人造红宝石

    youdao

  • Synthetic corundum may synthesize into sapphire and ruby.

    星光红、蓝宝石

    youdao

  • Synthetic corundum may synthesize into sapphire and ruby.

    星光红、蓝宝石

    youdao

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