The study presented here is the first step in a program aimed at reducing significantly the background count rate of NaI scintillation units.

这里程序第一步的学习是为了显著的减少非地址指令传送单元的暗中统计率。

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"Watch an evening's worth of TV and count how many times you hear music in the background," says Jeremy Lascelles, chief executive of Chrysalis.

“你可以看上一晚上电视，数数自己一共听到了多少首背景音乐。” “蝶蛹”的总裁杰里米·拉斯赛尔说。

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Then besides counting up, it should count up the loading values of cardinal wind as the background data for atmospheric forcast.

除了统计浓度值的算术平均值外，还应统计出主要风向下的浓度值，为大气预测提供本底数据。

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It's politics as burlesque (Bush laying the groundwork on a fly-swept Texan stroll with his closest advisers -- but somehow getting lost in his own backyard), with a mounting body count in the background.

CNN: Review: 'W.' slapdash, but surprisingly thoughtful

With music by Gluck, her favourite composer, in the background, the softly lit room is lined with portraits of the queen's inner circle (including handsome Count Axel Fersen, with whom she may have had an affair).

ECONOMIST: Marie-Antoinette