To isolate the retroreflections from the - oscillation in multipass amplifier system, the large - aperture electro - optical switch is required.

为了隔离后向反射激光以及激光器多程放大系统中的寄生振荡, 需要研制一种大口径的电光开关.

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Three - dimensional finite element method was used to analyze the temperature distribution of thick plate multipass welding.

采用三维有限元法模拟厚板对接多道焊的温度场分布.

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The influence multipass upsettingextrusion processing on the microstructure and hardness of Al alloy 2024 was investigated.

研究了室温多道次镦挤大变形对2024铝合金组织性能的影响.

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