碳定年 的英文怎麼說

中文拼音 [tàndìngnián]
碳定年 英文
radiocarbon dating
  • 碳 : 名詞[化學] （非金屬元素） carbon （c）
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 年 : Ⅰ名詞1 （時間單位） year 2 （元旦或春節） new year 3 （歲數; 年紀） age 4 （一生中按年齡劃分的階...
  1. The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements

    摘要近20年由於氣相同位素比值質譜儀的改良和氫、氧、碳、氮和硫等穩定同位素的廣泛研究，穩定同位素的研究技術已實質增加我們對于這些元素在自然生態系中生地化循環的了解。
  2. For decades, archaeologists have used a technique called carbon dating to work out how old their finds are

    幾十年來，考古學家已經用名為碳年代測定的方法計算出他們所發現文物的時間。
  3. In assessing a particular blood carbon monoxide saturation level, the age and health of the subject should be considered.

    在評定具體人血液中一氧化碳飽和度時，應當考慮對象的年齡和健康狀況。
  4. Mesons and etc. of them, carbon - 14 is commonly used in assessing the age of antiquities

    當中，碳- 14經常被用來鑒定古物所屬的年代，
  5. Bacteria and bacterial residue carry additional carbon and would skew the radiocarbon date toward the present

    細菌和細菌性殘余帶來額外的碳，會使現時測定的年代變得不準確。
  6. The researchers used radiocarbon dating on 22 pieces of microscopic charcoal found among neandertal tools in fire pits in gorham cave

    研究者們使用放射性碳方法為在山洞中發現的22片木炭確定年代
  7. Using the technique of radiocarbon dating, they all agreed that the cloth dated to the 13th or 14th century ( 1260 to 1390 )

    他們使用放射性碳年代測定法，都同意布料是回溯到十三或十四世紀（ 1260年到1390年） 。
  8. The initial stone circle at stonehenge ? the so - called sarsen stones ? has been radiocarbon - dated to between 2600 and 2500 b. c

    對巨石陣中的石材（就是所謂的砂巖石）進行放射性碳測定，日期在公元前2600年到公元前2500年之間。
  9. The bacterial bioplastic coating argument is the strongest, as there have been cases in which ancient textiles have yielded radiocarbon dates much younger than other artifacts in the same sites ? most notably in the instance of mummy 1770 in the british museum, whose bones dated 800 to 1, 000 years older, according to the radiocarbon tests, than the textile in which they were wrapped

    細菌性的「原生體覆蓋物」的爭論來得更激烈，已經有案例，就是古代紡織品的放射性碳年代測定比其他同樣大小的史前器物的年代要晚得多? ?最值得注意的例子就是1770年陳列在大英博物館的木乃伊，根據放射性碳年代測定，骨骼的年代為800至1000年之久，它們都被包裹著。
  10. The roto - jet pump is a new kind of very low specific speed pump which is developed in recent years. it is always used in carbin black, food production, chemical industry and deep well mining system to supply the steady outflow with low flux and high pressure

    旋轉噴射泵是近些年才發展起來的一種極低比轉數泵，主要用在碳黑、食品、化工以及深井采礦系統中用以提供小流量高水頭的穩定出流。
  11. The ancestors of modern man moved into and across europe, ousting the neanderthals, faster than previously thought, a new analysis of radiocarbon data shows

    用放射性碳測定年代的一項最新數據顯示，現代人祖先進入歐洲並逐漸取代尼安德特人的過程要比傳統理論認為的更快。
  12. Previously it was thought that this spread took place between 43, 000 and 36, 000 years ago, but the re - evaluated data suggests that it actually happened between 46, 000 and 41, 000 years ago - starting earlier and moving faster

    但是用放射性碳測定年代的一項最新數據表明，遷移過程應該在4 . 6萬年至4 . 1萬年前就已經發生了，即現代人祖先更早且更快地進入了歐洲。
  13. Rather than taking some 7, 000 years to colonize europe from africa, the reinterpreted data shows the process may only have taken 5, 000 years, scientist paul mellars from cambridge university said in the science journal nature on wednesday. " the same chronological pattern points to a substantially shorter period of chronological and demographic overlap between the earliest. modern humans and the last survivors of the preceding neanderthal populations, " he wrote

    據路透社2月23日報道，來自劍橋大學的科學家保羅米拉斯在最新一期的英國自然雜志上指出，用放射性碳測定年代的一項最新數據表明，人類祖先從非洲進入歐洲后，僅花費了5000年的時間就取代了歐洲早期居民尼安德特人，而不是傳統的理論所認為7000年。
  14. As a signatory to the kyoto pact on climate change, britain must reduce carbon emissions by 20 percent by 2010

    作為有關氣候變化的京都議定書的簽署國，到2010年英國必須將碳排放量減少20 。
  15. In this paper, based on the experi ment and research data of the injected water quality in lunnan oil field in many years, the actual situation of the injected water in lunnan oil field is analyzed and discussed and the chemical indices ( content of the iron, dissolved oxygen, sulfide, carbon dioxide and oil and corrosion rote ), the bacterial index, the phys ical indices ( content and particle diameter of the suspended sub stance ) and the compatibility of injected water with formation water, etc. are evaluated one by one

    文章立足於多年來輪南油田注入水水質的實驗研究數據，對輪南油田注入水現狀進行分析討論；對化學指標（鐵含量、溶解氧、硫化物含量、二氧化碳含量、含油量、腐蝕率） 、細菌指標、物理指標（懸浮物含量、懸浮物粒徑）和注入水與地層水配伍性等進行逐一評定。
  16. Poc of zhujiang river was mainly from modern carbon, the content of which was fairly constant in different branches all year round. the erosion of zhujiang river drainage basin is relatively serious, e

    珠江水體中poc以現代碳源為主，其含量在不同支流及全年內相當恆定，全部樣品的現代碳含量超過75 。
  17. Antiquities can be dated by measuring their natural radioactivity. popular techniques include " carbon - 14 dating " and " thermoluminescence dating ". they are useful tools in geological, anthropological and archaeological researches

    透過量度古物內天然放射性物質的濃度，我們可以鑒定古物所屬的年代，常用的技術包括碳- 14定年法和熱釋光定年法，對地質學人類學及考古學的研究都有莫大的幫助。
  18. Antiquities can be dated by measuring their natural radioactivity. popular techniques include " carbon - 14 dating " and " thermoluminescence dating ". they are useful tools in geological, anthropological and archaeological researches. carbon - 14 is produced when cosmic rays bombard the atmosphere

    透過量度古物內天然放射性物質的濃度，我們可以鑒定古物所屬的年代，常用的技術包括碳- 14定年法和熱釋光定年法，對地質學、人類學及考古學的研究都有莫大的幫助。
  19. Archaeologists have not excavated the site in modern times, and there has been no radiocarbon dating, but juval is the nearest place to the hollow where a number of the flowering plants and mosses associated with ? tzi now grow

    考古學家直到現代才到那兒發掘，遺址還沒有碳14定年，但是，許多與奧茲有關的開花植物與蘚類，現在都在居佛生長，在發現奧茲的地點周圍，有這種特徵的就數居佛最近了。
  20. Carbon - 14 dating

    碳14年代測定法
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