multi bunch transient beam loading 多束团瞬态束流负载
The decrease of the amplified light intensity after the steady-state is due to the decreases of the transient energy transfer with time and the energy dissipation caused by the beam fanning.
弱光放大达到准稳态之后的下降过程为瞬态能量转移的时间指数衰减过程与光散射引起的能量耗散的共同贡献。
The results are shown that: 1) under an equivalent moving concentrated force, dynamic responses of the simply supported beam consist of steady response and transient response.
研究结果表明：1）等效移动集中力作用下，简支梁的动力响应由稳态响应和瞬态响应组成。
Laser and electron beam welding produce thermal shocks on the materials with rapid transient and concentrated high energy beam.
激光、 电子束等高能束焊接加热具有升温速度快、热集中性与瞬时性强等特点，对被焊材料造成热冲击。
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