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Heavy metals, such as iron and lead, make good gamma - ray shields because of their high density.

重金属像铁、铅等由于密度很大,都是防护γ射线的最好的防护材料.

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Missing gamma - ray bursts are one of the top mysteries on the agenda.

失踪的γ射线爆发是会议议程中的重点之一.

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What do gamma ray bursters have to do with black holes?

伽玛射线爆发源与黑洞又有何关系 呢 ?

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An explosion model of Gamma Ray as proposed by Prof K . S.

香港大学物理系郑广生教授提出的伽玛爆模型.

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Are Gamma - ray Bursts due to Isotropic Fireballs or Cylindrical Jets?

伽玛射线暴:各向同性火球还是柱形喷流?

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What shines in Fermi's gamma ray sky?

在费米的伽马射线图里闪耀的是什么 呢 ?

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The collapsar model of gamma - ray bursts.

γ射线爆发的黑洞模型.

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This paper presents a new automatic spectra - stabilization method for natural gamma ray spectralog.

文章提出了一种用于自然伽马能谱测井仪器的自动稳谱技术.

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After many years silence, the soft gamma - ray repeaters SGR 1900 + 14 and SGR 1806 - 20 werediscovered to re - burst by BATSE.

另外沉寂了多年的软重复暴源SGR1900+14和 SGR1806 -20的再次爆发也由BATSE发现.

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We avoid the interfere of different elements with the multiple linear regression Gamma - ray detector.

采用多元回归分析方法,较好地解决了元素间的干扰问题.

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The identification of the clay mineral types by using natural gamma - ray spectroscopy log method was discussed.

自然伽马能谱测井不仅可以测得地层的总自然伽马值,同时还能得到地层的铀、钍、钾含量.

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Natural gamma ray spectral log is a new type of well logging method.

自然伽马能谱测井是一种新的测井方法.

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The key technique approaches to improving the natural gamma - ray logging quality are surface data processing methods.

由于自然伽马测井受多种因素影响,通过在各个环节中采用行之有效的测井质量控制保障措施,才能确保自然伽马测井质量.

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The relative gamma ray emission probabilities of 87 Kr were measured by HPGe detector.

用相对效率为60%的HPGe探测器测量87Kr的 相对γ射线发射几率和用内充气正比计数管绝对测量87Kr放射性浓度.

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Bureau of Air gamma - ray observation satellite can be found every year about 10 gamma - ray burst.

欧航局的伽马射线观测卫星每年大约能发现10次伽马射线爆.

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