natural uranium 中文意思是什麼

natural uranium 解釋
天然鈾
  • natural : adj 1 自然界的；關于自然界的。2 天然的；未開墾的；野生的。3 固有的 生來的 天賦的（opp acquired）...
  • uranium : n. 【化學】鈾 （U）。 fertile uranium 鈾238。
  1. It is important that study gamma - ray spectrometry of field rock and soil in the earth ' s crust. its energies range between 30kev and 3000kev, where there is much information of natural radioactive nuclides, such as uranium, thorium, potassium, and information of artificial radioactive nuclides, such as cesium, americium, cobalt, and information of the results in interaction between gamma - ray and earth ' s crust

    研究表明：野外地面射線能譜測量主要研究地殼巖石土壤中產生的能量約為30kev 3000kev的射線，這裡面包含著鈾、釷、鉀等天然放射性核素信息，核工程活動產生的大量人工放射性核素信息以及射線與地殼相互作用產生的相關信息。
  2. Candu is a pressurised heavy water reactor operated on natural uranium fuel u - 238 and uses heavy water d

    Candu是重水壓水式反應堆的一種，以天然鈾燃料u - 238運作，並以重水d
  3. Three decades ago french scientists discovered that parts of a uranium deposit then being mined in gabon had long ago functioned as natural fission reactors

    30年前法國科學家發現，當時正在開採的加彭鈾礦中，有某些部份在很久以前曾經是天然的核分裂反應堆。
  4. Based on features of natural electric potential in oxidation and reduction zones, it is held that the natural electric field method may determine the front line of the interlayer oxidation zone, and can hence infer the general position of the interlayer oxidation zone sandstone - type uranium deposit

    根據氧化帶與還原帶的自然電位變化特徵，利用自然電場法可以確定盆地層間氧化帶前鋒線，由此推測層間氧化帶砂巖型鈾礦大體空間位置。
  5. Nuclear criticality safety for fissile materials outside reactors - nuclear criticality control criteria and subcritical limits for plutonium - natural uranium mixtures

    反應堆外易裂變材料的核臨界安全鈈-天然鈾混合物的核臨界控制準則和次臨界限值
  6. The results show that coincidence detection method has obvious benefit in detecting nuclear warheads. for the same type warhead, the coincidence counts rates of the model of warhead of heu pit is 10 times as big as that of fake warhead of natural uranium pit. if we know the nuclear warheads configuration by other methods, the method of coincidence neutron detection could be used to distinguis h the fake nuclear warheads from the reals

    計算表明用探測符合中子的方法探測核彈頭對區分真假核彈頭有明顯的優點，對于同一核彈頭模型，裂變彈芯是高濃鈾和用天然鈾替代高濃鈾時，符合中子計數相差1個量級，如通過其他途徑了解核彈頭的大致結構，符合測量的方法就可以有較高的置信度分辨真假核彈頭。
  7. The basic fuel for nuclear reaction is derived from natural uranium, a very heavy metal

    核反應堆的基本燃料取自天然鈾，鈾是一種非常重的金屬。
  8. If using the natural uranium to replace the heu pit in warhead, the delayed neutron counting rate would be about 3 times lower. the coincidence neutron detection is proposed to be used in nuclear warhead detection

    計算表明用天然鈾替代高濃鈾作的假彈頭，它們的出殼緩發中子數相差約3倍，需在一定條件下，才可對真偽核彈頭做出判斷。
  9. Guided by the basic theory of high - resolution sequence stratigraphy, and based on the core observation, the analysis of chemical composition of rocks, and data of natural potential logging and apparent resistivity logging, authors have set up the high - resolution sequence stratigraphy framework of the ore - hosting yaojia formation, and discussed the relation of the stratigraphic structure of the middle cycle, as well as the paleotopography, the micro - facies to the formation of uranium deposit

    在高解析度層序地層學基本理論指導下，筆者通過巖心觀察、巖石化學組分分析、自然電位及視電阻率測井等手段，建立了賦鈾巖系姚家組高解析度層序地層格架，探討了中期旋迴內地層結構、古地形和沉積微相與鈾礦床形成的關系。
  10. The results show that thermoluminescent anomalies, whose two edges are higher and the middle is lower, indicate the uranium deposit, the rapidity step of natural voltage indicates the transitive section of oxidation - reduction

    自然電位陡梯度變化帶反映了氧化還原過渡帶的位置。鈾、鉬、釩的地氣異常在礦體上方或礦體邊緣位置有不同程度的顯示。
  11. It summarized the comprehensive geophysical and chemical prospecting information model of interlayer oxodatipn zone sandstone - type uranium deposit. that is, the thermoluminescent anomalies, whose two ends are higher and the middle is lower, the rapidity step of natural voltage and the geogas anomalies of u indicate the uranium deposit

    最後歸納總結出了層間氧化帶砂巖型鈾礦的綜合物化探信息模式，即土壤天然熱釋光的低值；自然電位的陡梯度帶；鈾的地氣高值異常信息基本反映了鈾礦體的客觀存在。
  12. The data of natural gamma ray spectrum logging are of well conformity with the contents of thorium, uranium and potassium obtained by surface gamma ray survey, laboratory analysis and aerial gamma ray spectrum survey

    對自然伽馬能譜測井儀、地面伽馬能譜、室內分析、航空伽馬能譜測量的同一地點釷、鈾、鉀元素含量進行對比分析得知，各種方法所得結果具有較好的一致性。
  13. Examination of radioactive materials for foods - determination of natural thorium and uranium

    天然釷和鈾的測定
  14. Abstract : from radioactive equilibrium of natural radioactive decay series and content of several radioactive constituents, the formula for estimating activity of uranium ore and solid waste is derived and a case study on treatment engineering of decommissioning linchang uranium mine is presented

    文摘:根據天然放射性衰變系列的平衡關系，推出了通過若干個而非全部放射性組分的監測數據來計算鈾礦石和固體廢棄物中放射性活度的公式，給出了臨滄鈾礦退役治理工程的估算實例。
  15. Exemption of natural uranium content in dental porcelains

    牙瓷中天然軸的豁免
  16. Natural uranium hexafluoride specification

    天然六氟化鈾技術條件
  17. The application of the natural electric field method to the prospecting for interlayer oxidation zone sandstone - type uranium deposits

    自然電場法在尋找層間氧化帶型砂巖鈾礦中的應用
  18. This paper deals with the basic theory of the natural electric field method and its application to the prospecting for interlayer oxidation zone sandstone - type uranium deposits

    摘要介紹了自然電場形成的原理及在尋找層間氧化帶砂巖型鈾礦中的應用。
  19. This item has studied the applications of the measure of natural thermoluminescence of soil, natural voltage and geogas, whose penetrating power are better, in the exploration of leachable sandstone uranium deposit

    本課題選擇穿透能力較強的土壤天然熱釋光測量方法、自然電位法和地氣測量三種方法，研究其在隱伏砂巖型鈾礦找礦中的應用。
  20. Even without these man made sources of radiation, exposed to natural background radiation. the rocks and soil of the earth s crust contain variable amounts of natural radioactive elements such as uranium and thorium. this varies with geography - for example the hottest places in britain are cornwall and around aberdeen

    就算排除人為輻射，人類會在天然環境中接觸到本底輻射，如地球外殼的巖石和泥土含有份量不同的輻射元素如鈾和釷，而份量視乎地理位置，如英國的康瓦爾和阿伯丁郡最為熱點。
分享友人
分享到 Line

分享到臉書