A man of ripe age and a young girl made their appearance on the threshold of the attic.
一个年近高龄的男子和一个年轻姑娘出现在那穷窟门口。
In both vacuum and atmosphere, the damage threshold and damage spot appearance of the photovoltaic detector are discussed under single pulse or multi-pulse laser irradiation.
分析讨论了真空及大气环境下，单脉冲及多脉冲激光打击时，光伏型探测器的破坏阈值及破坏形貌的区别及其成因。
Computer art takes the brand-new artistic media and the style, establishes in one real and in the hypothesized between threshold, means one kind of new visual culture language the appearance.
计算机艺术建立在一个真实和虚拟之间的分界点上，意味着一种新的视觉文化语言的出现。
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