laser threshold power density 激光阈值功率密度
Putting the reactants in uniform electric field, we reduced the laser power density threshold needed by said reaction by a factor of two.
把反应物置于均匀外电场中，可以使引发化学反应时所需的激光功率密度阀值降低一倍。
The influences of the filler metal powder on the laser power density threshold value, weld formation and process stability were studied during CO_2 laser welding of aluminum alloy.
研究了填充合金粉对CO_2激光焊接功率阈值、焊缝成形和焊接过程稳定性的影响。
The results show: pulse power density from CO2 laser reaches air breakdown threshold through thrice reflecting focus system, and plasma radiation phenomena is observed in the experiment.
结果表明，脉冲co 2激光功率密度经三次反射激光聚焦系统达到空气击穿阈值，实验中观察到等离子体发光现象。
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