allowed frequency 中文意思是什麼
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Recent progress in ultrafast optics has allowed the generation of ulfcraintense light pulses comprising merely a few field oscillation cycles. the arising intensity gradient allows electrons to survive in their bound atomic state up to external field strengths many times higher than the binding coulomb field and gives rise to ion - ization rates comparable to the light frequency resulting in a significant extension of the frontiers of nonlinear optics and ( nonrelativistic ) high field physics
隨著超快光學技術的發展，僅含幾個振蕩周期的超強脈沖已經能產生，且其強度梯度可使電子存在比庫侖束縛場高許多倍的外場產生的原子束縛態上，並產生了同光頻相差不大的電離率，從而促進了非線性光學前沿及非相對論的強場物理的延伸。 -
This findings knew in the absorber compound material the aluminum oxide powder content must only 5 %, also the match constitutive property protects the curtain level to be allowed to enable the electromagnetic wave absorption, the camouflage, the frequency width to achieve the best potency
本研究結果得知吸收體復合材中氧化鋁粉末含量需僅5 % ，且匹配結構性護幕層可以使電磁波吸收、遮蔽、頻寬化達到最佳效能。
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