Focus on two simple cases of "dry laser cleaning", laser is strongly absorbed by the substrate only and by the contamination only, to discuss the physical mechanism of dry laser cleaning.
针对干式清洗中只被基底吸收和只被污染物吸收两种简单情况讨论了激光干式清洗的物理机理，并且给出了激光干式清洗典型的实验装置图。
Two simple cases, step and impulse function responses, were considered respectively.
分别考虑了两种简单情况下梁的响应：阶跃激励和脉冲激励。
Two simple cases, step and impulse function responses, were considered respectively.
分别考虑了两种简单情况下梁的响应：阶跃激励和脉冲激励。
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