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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Maximum levels of approximately 0.5 picocurie/liter can occur.
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| | During some epidemiological investigations undertaken by certain company in Yunnan, it was discovered that the mortality of lung cancer among underground miners was 16.97 times that of the above-ground control and was of apparent occupational character. The content of radioactive radium in mineral was 19 times higer than that in rock and served as a chief source of radon. The average cumulative exposure dose of radon daughters calculated from 294 cases of lung cancer among miners was 790 WLM per miner. The ... | | 调查云南某公司所属矿山矿工肺癌病因时发现,矿工肺癌死亡率为地表对照组的 16.97倍,有明显的职业性特点;矿石样品放射性镭含量比岩石样品高19倍,为井下氡气的主要来源;估算294例矿工肺癌病人的氡子体累积暴露量,求得其平均值为790工作水平月,平均发病坑龄24年;25例肋骨样品~(210)铅的平均含量为1.25微微居里/克湿骨重,是对照人群的6.6倍。作者认为放射性氡和氡子体是主要致癌原因之一。 | | 文摘来源 | | The Content of ~(210)Po in six varieties of china-made cigarettewas repored in this paper.The average ~(210)Po content per cigarette was det-ermined to be 0.85 pci (31.4Bq).In process of The“standard smoking”about 12% of ~(210)Po contained in a cigarette was transferredsinto the inha-led portion of smoke and 18% into its uninhaled Portion,35% of the ~(210)Pocontent remained in the cigarette ash and the same percentage in the cigare- tte stump.The fibre filter tip ean reduce the ~(210)po content in smoke byh... | | 本文报道了6种国产香烟中~(210)Po 的含量,平均每支香烟含有0.85微微居里(31.4贝可)。在标准吸烟过程中,一支香烟所含有的~(210)Po,约12%转移到吸入烟雾中,18%转移到逸出烟雾中,35%在烟灰中,35%在烟蒂中。纤维过滤咀可吸收50%的~(210)Po,水可吸收58—60%。估算了每日吸一盒烟的人25年所受的剂量约为1雷姆(1×10~(-2)西弗)。 | | 文摘来源 | | In this paper the accumulative radiation dose of radium-226 in human body for whole life was estimated using a method of directdetecmination of the radium-226 content in bone-ash.The results obtainedfrom 60 samples of bone-ash showed that the average value of the radium-226 concent in bone-ash was 2.1×10~(-14)Ci/g.The values of the radium-226 content for the infant group was obviously higher than that for theadult groups between which no significant difference was found in theradium-226 content of bone-ash.... | | 本文报道了用直接测定人骨灰中~(226)Ra 含量的方法估算人一生中体内镭的累积辐射剂量。60例样品的测量结果表明,骨灰中~(226)Ra 含量的平均值为2.1×10~(-14)居里/克。婴幼组明显高于成年组;各成年组之间,差异不显著,性别间亦无差异。各骨中~(226)Ra 的含量不同,肋骨、脊椎骨之含量最高,而骨盆及四肢骨中含量最低。据此,估算出人体内~(226)Ra 的平均积存虽为70微微居里,并推算得每年骨所吸收的剂量,约为2.5毫拉德。 | | 文摘来源 | |   |
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