They were monitoring the upper air to collect evidence of atomic explosions.
他们正在检测高空空气以收集原子爆炸的证据。
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While the Air Force contends that these atomic features were the only movies made, it is believed that some 19,000 "films" were produced on Lookout Mountain between 1947-1969.
The air acetylene atomic absorption spectrometry is used for measuring the nickel content in hydrogen battery electrochemistry impregnate ethanol solution.