... 减速辐射 slowing-down radiation 缓变近似 slowly varying approximation 慢动组件 slow-motion device ...
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Slowly varying envelope approximation 慢变包络近似 ; 缓变包络近似 ; 变包络近似
slowly varying amplitude approximation 缓变振幅近似
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The spatial singularity of the pulsed beams is also discussed when the slowly varying envelope approximation is introduced.
讨论了引入缓变包络近似后出现的时空奇异性。
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