exposure period

基本解释

For greatest effectiveness respirators need to be worn before and during the entire exposure period.
最有效的呼吸防护需要在有暴露以前佩戴防护口罩。
When the shutter has been set for a very short exposure period, such as 1/200th sec or faster, the twin curtain system comes into its own.
当快门被设置为高速曝光，像1/200秒或更快时，两部分幕帘系统就相互配合完成。
With the time of being in the army and cumulative sun-exposure period, the prevalence of tanning, photoaging and polymorphous light eruption increased, while the prevalence of sunburn decreased.
晒黑、多形性日光疹和光老化患病率随着执勤官兵高原入伍时间延长而增高，随着累积日照时数增多而增高；
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One is there's no lag period, notice that antibody levels start rising right away after the second exposure.
第一是没有迟滞期,请注意,抗体浓度迅速上升,在第二次接触抗原时
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Reducing any one of these by 10% would pay for the NCS. Their rarity means they have hardly ever been studied prospectively from the period of exposure before disease (which in all of them is likely to be largely between conception and birth).
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The latency period between radiation exposure and the onset of cancer has been documented to be as long as several decades.
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While Google provides webmasters with tools to remove pages from its index, we overlooked the fact that Blippy could have been crawled by Google during the period of the exposure.
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