SR机器有重大扭矩波纹，特别是当经营在唯一脉冲电压控制方式。
SR machines have a significant torque ripple, especially when operated in single-pulse voltage control mode.
利用飞秒激光加工非晶合金，研究了多脉冲加工过程中的积累效应，以及非晶合金表面周期性波纹结构的形成规律。
Detailed studies on the ablation of amorphous alloy FeCuNbSiB in air with femtosecond laser. The accumulation effect of multiple pulses and formation law of periodical ripples were discovered.
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