測定年代 的英文怎麼說

中文拼音 [cèdìngniándài]
測定年代 英文
age determination
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 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...
  • 代 : Ⅰ動詞1 （代替） take the place of; be in place of 2 （代理） act on behalf of; acting Ⅱ名詞1 （歷...
  • 測定 : determine; determination; setting-out; admeasurement; assignment; assay; finding
  1. In order to elaborate the app licability of osl to loess, especially single aliquot regenerative protocol ( sar ), involving stimulation of the same disc with an infra - red laser diode followed by blue leds to polymineralic fine - grains of loess, such explanations as light bleaching, preheat, anomalous fading, prior - ir exposure were investigated in this paper. for drawing adequate coarse grains from loess, quartz and feldspars, as well as loess, were etched by hydrofluoric acid and fluorosilicic acid. the sequence of ages of holocene loess in weihe rivier basin has been established by single - aliquot ( sar ) and multiple - aliquot using fine - grains and sar using coarse - grains

    本文通過渭河流域全新世黃土的光曬退實驗，地表黃土樣品的d _ e值測定，細顆粒單片的預熱、反常衰退、紅外暴露實驗，說明釋光測年在全新世黃土中應用的可行性及單片再生劑量法（ sar ）在黃土細顆粒中的適用性；為了從黃土中分離出足夠的粗顆粒，進行了純石英和長石的氫氟酸（ hf ）和氟硅酸（ h _ 2sif _ 6 ）溶蝕實驗，黃土粗顆粒石英溶蝕分離實驗；通過細顆粒單片、多片的blsl 、 irsl和post - irosl ，熱釋光，及粗顆粒石英的blsl的年代測定，選擇適于全新世黃土的釋光測年方法，並建立了渭河流域全新世黃土的年代序列。
  2. Dendrochronology a method of archaeological dating by the annual rings of tree, used when the lifespans of living and fossil trees in an area overlap

    樹木年代學：在一定的區域內當生活樹木以及化石樹木的壽命有重疊時，通過樹木的年輪來推測考古學年代的方法。
  3. The scientists say they need to conduct further tests to confirm the link, they ' re concerned about the body builders who began using the supplements in the early 1990s

    科學家們稱，他們需做更進一步的測試以確定這一聯系，他們對那些從九十年代初期就開始使用這些補充品的健美運動員們表示擔憂。
  4. 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。
  5. Since 1970 ' s, many investigators have made a plenty of studies about the aggressive behavior of the schizophrene, but did n ' t come to an accordant conclusion. maybe the reason is that they did n ' t take the same definiens of the aggressive behavior and violent behavior or the same tool to measure the personality

    自從上個世紀70年代以來，國內外的學者對此進行了廣泛深入的研究，產生了大量的研究成果，但是結論尚未統一，這可能是所採用的攻擊行為和暴力行為的定義不同和人格的測量工具不同等而造成的。
  6. Fundamental of laser 40ar / 39ar dating method : our laboratory has successfully set up the laser microprobe 40ar / 39ar geological dating method. our works include adjustment of the high - gain electron multiplier in mass spectrometer and correction of mass discrimination, adjustment of the laser, test for absorption ability of minerals to laser, designing and manufacturing high - vacuum sample chamber, sample preparation and irradiation, research on the variability of j values on the surface of rock chips, measuring atmospheric argon, determination and correction of blanks and ages, etc. the laser microprobe technique is particularly effective for some geological samples. it can be used, for example, for research of distribution of the components in extremely small samples that are very difficult to be separated and purified and those which contain excess argon

    本文首先從常規~ （ 40 ） ar ~ （ 39 ） ar階段升溫定年實驗室的改進入手，進而建立了激光~ （ 40 ） ar ~ （ 39 ） ar定年實驗室，利用這兩種先進同位素地質定年方法，結合其他手段，對青藏高原腹地和北緣的阿爾金斷裂系多期地質事件進行了詳細的同位素年代學研究：一、參照國際先進實驗室的流程，對我們的常規~ （ 40 ） ar ~ （ 39 ） ar階段升溫實驗室在樣品的預處理、樣品的照射條件和系統空白測量及校正等方面進行了改進，使之產出的同位素年代數據更可靠並為國際同行所承認。
  7. Rb - sr whole rock - minerals ages determination indicates that the isochronal ages are 25018 ma and 213. 09. 8 ma for suhaitu and wenduerhao intrusion, respectively. the dated isotopic ages demonstrate that the alxa alkaline - rich intrusive rocks belong to indosinian alkaline magma activity. the similarities and differences of the alkaline - rich intrusive rocks distributed in the alxa fault block and those distributed along the northern margin of the north china block and the tarim block are compared and discussed

    採用rb - sr法對阿拉善斷塊有代表性的蘇亥圖溫都爾浩富堿侵入巖體的年進行了測定，分別獲得25018 ma和213 . 09 . 8 ma的年值，提供了屬于印支期的年代學證據，認為阿拉善斷塊北緣富堿侵入巖和華北斷塊北緣燕遼陰山印支期富堿性侵入巖帶應該劃歸同一印支期富堿性侵入巖帶。
  8. Metallogenic conditions and prospecting for copper - nickel type deposits in mafic - ultramafic rocks in inner mongolia

    超鎂鐵巖體的年代測定及其意義
  9. The radiocarbon ages of charcoal and their implication derived from ciergou site along the haiyuan strike - slip fault

    永定河上游晚更新世晚期以來的堆積階地年代測定
  10. 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。
  11. 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） 。
  12. Thermoluminescence dating of ancient porcelain

    瓷器熱釋光測定年代研究
  13. Development of thermoluminescence dating of ancient pottery and porcelain

    古陶瓷熱釋光測定年代發展
  14. Beta radiography dating

    射線照相法測定年代
  15. Iraqi archaeologists discovered the remains of an assyrian temple and sculptures dating back to the 9th century bc, two giant winged lions, frescoes and reliefs

    伊拉克考古學家發現亞述人寺廟和雕刻物遺跡測定年代追溯到公元前第9世紀，二個巨大的有翼獅子，壁畫和浮雕。
  16. 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。
  17. A further refinement of the calendar was the introduction into dating of the place of a year according to its position in relation to the orbital revolution of the planet jupiter, called brhaspati in sanskrit

    測定年代的更精緻歷法被引進入印度，是依照木星旋轉軌道而定的，在梵語裏面就稱為巴哈帕提。
  18. 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。
  19. 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。
  20. By dating the rocks and noting their crystalline structure, paleomagnetists can tell which direction the magnetic field took at any given time

    通過測定巖石的年代和標示它們的水晶的結構，古磁學家能說出任何指定年代的磁場方向。
分享友人
分享到 Line

分享到臉書