To exclude the ? ? - ray counts, all pulses below a fixed level are rejected.

为了剔除γ射线的计算, 也就剔除了低于某一固定水平的所有脉冲.

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We must summarize last year's experience and do well in this year's fixed - level production.

我们要总结去年的生产经验,做好今年的定产工作.

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