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。
The door opened. A singular and violent group made its appearance on the threshold.
门开了，一群狠巴巴的陌生人出现在门边。
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。
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。
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