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It has a half - life of about 41 / 2 billion years.

它的 半衰期 大约为45亿年.

辞典例句

The half - life of francium is 22 minutes.

钫的半衰期是22分钟.

辞典例句

A radioactive, inert, gaseous isotope of radon a half - life of 3.92 seconds.

氡的一种放射性的, 惰性的和气态的同位素,其半衰期为3.92秒.

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I am willing to buy after the half - life and life?

愿意给我买后半生的生命与生活 吗 ?

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The half - life of humic acid is measured in centuries.

腐殖酸的半衰期是几个世纪.

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A radioactive, inert, gaseous isotope of radon, with a half - life of 3.92 seconds.

锕射气氡的一种放射性的, 惰性的和气态的同位素, 其半衰期为3.

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It's the year of the shooter, and Half - Life and Unreal are introduced.

这是一年的射手, 和 半 条命和虚幻的介绍.

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Tritium has a half - life of 12.4 years.

氚的半衰期为12.4年,地球形成时的氚早已不存在.

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One waiting of whole life, half life grief.

一生的等待, 半世的哀愁.

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The drug acts only in the brain, claims Lynch. It has a short half - life of hours.

加里·林奇说,药物只在大脑里发生作用, 而且只有短暂的几个小时的 半衰期.

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The half - life of a VP of Sales or Marketing in some industries is 18 months.

在某些行业中,VP营销的 中期 寿命大约是18个月.

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Would there be an actual End of the Half - life story, considering some comercial purposes?

出于商业目的,《半条命》的故事会有结局么?

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Just browse to your half - life or counterstrike directory, and point it to the original hl . exe.

你可以浏览你的半死目录或者你的半死目录, 并指定该文件.

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Even Francium's most stable isotope, Francium - 223 only has a half - life of 22 minutes.

钫的最稳定的同位素, 钫 -223 也只有22分钟的半衰期.

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By contrast, the half - life of a cordless phone for the home is measured in years.

相反, 家用无绳电话的使用期却是有些年头的.

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