In this condition, the energetic material cannot be ignited. 同樣，過大的激光束能量密度太小，不足以點燃含能材料。
This paper is concerned with the laser ignition performance of energetic material affected by the light spot diameter using photoelectric method. 摘要用光電探測法研究了激光光斑直徑對含能材料激光點火特性的影響。
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