chemical age 中文意思是什麼
chemical age
解釋
化學年齡-
On the bases of the galaxy evolution theory, we use the therotical chemical evolution model of three zone ( such as halo, thick disk and thin isk ) and multi - phase ( diffuse gas, molecular clouds, stars of both low and high mass, the remnants ). by comparing with the observational constraints, such assurface densities, age - metallicity relation, g - dwarf metallicity distribution in the solar neighbourhood and the correlation between [ a / fe ] and [ fe / h ], supernovae rates, infall rates. the rationality of the model is verified. based on the theory model, we calculate the abundance of neutron capture element
本文正是在銀河系化學演化的基礎上，利用銀河系的三成分（ threezone ） （即暈、厚盤和薄盤）多相（ multi - phase ） （氣體，分子云，大、小質量恆星以及剩餘物質）的化學演化的理論模型，通過與觀測約束（質量面密度、場星的年齡-金屬豐度關系、太陽附近g矮星金屬含量分佈函數、三成份的特徵量、元素的星系化學演化、超新星的爆炸率、內落速率等）的比較，來檢驗模型的合理性。 -
Chemical fossils ( e. g. alkanes and porphyrins ) are often the only evidence for life in rocks of precambrian age
化學化石（烷烴和卟啉）是前寒武紀地層中生命存在的唯一證據。 -
Abstract : in this paper, the lightcraft vehicle without on - board chemical fuel was analyzed sending manned craft into space on satellite laser - beams powered by solar energy in next age was speculated
文摘:分析了勿需化學燃料的光動力飛行器，並概述了下個世紀從衛星上用太陽光泵浦的激光束推進星際飛行器的設想。 -
With increase of artificial forest age, the content of soil organic matter decreased sharply. and soil physical, chemical and biological properties of forest became worsen. from soil physical properties analysis, soil silt, clay, physical clay, aggregate degree and structure coefficient in topsoil increased with increase of artificial forest age and soil sand deceased
在土壤物理性質方面，隨著人工雲杉林齡的增加，土壤表層粉粒、粘粒、物理性粘粒、團聚度和結構系數降低，砂粒含量增高，土壤飽和持水量、毛管持水量及總孔隙和毛管孔隙在人工雲杉演替過程中表現出「 u 」型變化。 -
The study has investigated and compared soil physical, chemical, biochemical properties of eight stands on paired sites in mountainous regions of northeastern china, trying to look for the mechanism of soil degradation and the change trend of soil properties in different age of plantations in relations to forest productivity. the eight stands are 4 first rotation of larix olgensis plantations with different age classes, the second rotation of larix olgensis young stand, pinus sylvestris var
本文通過固定和典型樣地，對東北山地不同生長發育階段落葉松人工林和二代落葉松幼齡林以及與二代落葉松幼齡林同一塊林地的樟子松幼齡林、天然次生林、落葉松水曲柳混交林等8個林型土壤質量進行了對比與分析，深入探討了落葉松人工林土壤質量降低的機理和不同發育階段土壤質量變化規律以及與森林生產力變化的關系，並提出了林地土壤質量調控措施。 -
The main products and process of the company ? various pure cotton and chemical fabric blended knitted fabrics ? various of micro fibre fleece fabries ? short hair fabrics ? high count mercerizing singed fabrics ? double mercerized double singed fabrics ? all cotton spandex elastic plant fabrics ? compound fabrics ? computer jacquard color fabrics ? various anti - shrinkage and preshrink - age fabrics and environment protective “ grccn ” fabrics etc
公司主要產品及加工業務:各類純棉，化纖混紡針織物、各類起起絨織物、短毛絨織物、高支絲光燒毛面料、雙絲光雙燒毛面料、全棉彈力織物、電腦提花面料、各類預縮防縮面料、多功能「綠色」環保染整加工。 -
( 2 ) compared to secondary natural forest, the amount of three main types of microbes in rhizosphere soil of different age of larix olgensis plantation correspondingly decreased largely, enzyme activity in non - rhizosphere soil reduced, the biochemical activities abated, and soil physical and chemical properties deteriorated
（ 2 ）與天然次生林相比，落葉松人工林不同發育階段根際土壤三大類微生物數量均相應地有較大幅度的降低，非根際土壤酶活性減弱，土壤生化作用強度降低，土壤理化性質變壞。 -
This paper studies cretaceous volcanics distribution, rock types, tectonic setting and reservoir characteristics in the western depression of liaohe fault depression through statistics of compound logging data, core observation, thin section identification, cathodeluiminescence, scanning electron microscope, x - ray diffraction analysis, image analysis, rock chemical analysis, isotope age testing, and inclusions temperature testing
摘要通過全區綜合錄井資料的統計、大量的巖心觀察，並利用薄片鑒定、陰極發光、掃描電鏡、 x衍射分析、圖像分析、巖石化學分析、同位素年齡測定、包裹體溫度測定等10餘種方法，對遼河斷陷西部凹陷白堊紀火山巖分佈、巖石類型、巖石系列、形成的構造背景及儲層特徵進行了研究。 -
In recent years, the electron microprobe chemical dating technique has been advance development and achievements, this paper sysmaticly introduces the basic principle, sample prepation, analytical procedure and age calculation
近十年來電子探針化學測年技術發展迅速，並取得了豐富的研究成果。 -
Apart from the concentrations and chemical properties of the pollutants, the person s age and general state of health, the duration of exposure, factors such as the weather condition and the distance from the emission sources also affect the nature and extent of the health effects observed
除了空氣中污染物的濃度與化學特性之外，有關人士的年與一般健康狀況接觸污染物的時間長短氣候情況以及排放源頭與接觸者之間的距離等，都會對健康構成不同的影響。 -
The traditional patent law theory, with the age of mechanic industry as its basis, which encourages us to consider such questions as whether a gene, as an objective chemical substance was invented or discovered ; whether there are any ethical problems in the legal protection for genes an gene technology based on their natural connections with life ; what are the prerequisites for gene patent and how to solve the contradictions between eene patent and protection and utilization of gene resources
特別是對構建於工業機械時代的傳統專利法理論提出了巨大的挑戰。促使我們去思考基因作為客觀存在的化學物質到底是發明還是發現、基於與生命的天然聯系對基因及其科技予以專利法律保護是否存在倫理道德問題、基因專利的條件以及基因專利與基因資源的保護和利用之間的矛盾等問題。
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