助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   自然丰度 的翻译结果: 查询用时:0.02秒
图标索引 在分类学科中查询
所有学科
农业基础科学
更多类别查询

图标索引 历史查询
 

自然丰度
相关语句
  natural abundance
     It is observed that the red shift of the spectrum of the dissociation yield of ~(13)CHClF_2 molecules in natural abundance is 6cm~(-1) at 0.69 J/cm~2 fluence and 5 torr pressure.
     自然丰度下~(13)CHClF_2分子离解率谱红移6cm~(-1)(0.69J/cm~2,5torr)。
短句来源
     TOPSOIL ORGANIC CARBON POOL AND ~(13)C NATURAL ABUNDANCE CHANGES FROM A PADDY AFTER 3 YEARS CORN CULTIVATION
     改种玉米连续3年后稻田土壤有机碳分布和~(13)C自然丰度变化
短句来源
     APPLICATION OF 15 N NATURAL ABUNDANCE METHOD TO THE RESEARCH ON
     ~(15)N自然丰度法在生态系统氮素循环研究中的应用
短句来源
     ~ (13 ) C at Natural Abundance Levels in the Broad-leaved Deciduous Forest in the Warm-temperate Region of China: Their δ~ (13) C Values and Ecological Significance
     中国暖温带落叶阔叶林中某些树种的~(13)C自然丰度:δ~(13)C值及其生态学意义
短句来源
     The average of 15 N natural abundance of atmospheric samples determined is 0\^3659%(the theoretical value is 0\^3660%) with C. V.% of 0\^09% and an average of absolute error of 0\^0002%, which is up to the error standard of the mass spectrometer used.
     测得空气中N2 的1 5N自然丰度平均为 0 36 5 9% (理论值为 0 36 6 0 % )、绝对误差的平均值为 0 0 0 0 2 %、C V %为 0 0 9% ,与质谱计的设计精度完全吻合 ;
短句来源
更多       
  “自然丰度”译为未确定词的双语例句
     The analytical precisions of lead isotope ratios for SRM 981 of three repeat measurements at lead concentration of 5 μg/L were about 0.07% for 207Pb/ 206Pb, 0.09% for 208Pb/ 206Pb and 0.3% for 206Pb/ 204Pb, respectively.
     在优化后的仪器分析条件下,测定5μg/L的NISTSRM981自然丰度铅同位素标准溶液的各对铅同位素比值,获得的207Pb/206Pb分析精度可优于0.1%。
短句来源
     (2) Based on the NH_4~+/NO_3~- ratios and δ~(15)NH_4~+ values in rainwater at three sites in the Yangtze River Delta, NH_4~+ sources in atmospheric wet deposition were also discussed.
     NH_4~+/NO_3~-比值变化与氮肥施用时间、不同作物生长季、耕作制(农田和菜地)以及季节性气候变化紧密关联。 研究还发现,降水中NH_4~+的~(15)N自然丰度值也存在季节性变化,这种变化同样也与氮肥的施用时间,不同的稻麦生长季及气候的季节性变化紧密关联。
短句来源
     NATURAL ~(15)N ABUNDANCE IN SOIL AFFECTED BY LONG-TERM APPLICATION OF ANIMAL WASTES
     长期施用家畜废弃物堆肥对土壤剖面~(15)N自然丰度的影响
短句来源
     Natural-abundance 15N and 13C NMR chemical shifts of eight 4-substituted 2 ,2 ,6 ,6-tetramethylpiperidines have been measured. It is found that the 15N chemical shift is correlated with the electronegativity of the 4-substituent, indicating a long-range interaction of the 4-substituent on the 15N chemical shift. A linear relationship is also present between the 13C chemical shifts and the electronegativity of the 4-substituted atoms.
     测定了8个4-位取代的2,2,6,6-四甲基哌啶的自然丰度~(15)N核磁共振谱及~(13)C谱,发现4-位取代基对~(15)N化学位移有一定的远程相互作用,~(13)C化学位移与4-位卤素取代基的原子电负性有近似的线性关系。
短句来源
     Studies on Natural-Abundance Nitrogen-15 Nuclear Magnetic Resonance Spectroscopy (Ⅰ)——Long-Range Interaction on Nitrogen-15 Chemical Shifts of 4-Substituted Piperidines and Their Correlation with Carbon-is Chemical Shifts
     自然丰度氮-15核磁共振的研究(Ⅰ)——哌啶衍生物中4-位取代基对~(15)N化学位移的远程相互作用及其与~(13)C化学位移的关系
短句来源
更多       
  相似匹配句对
     The Natural Meaning
     自然的心迹
短句来源
     On Natural Appreciation of the Beautiful
     自然审美
短句来源
     between CEC and intensity of natural radioactivity, richness of radioactivity elements in source rock;
     CEC与自然放射性强度及自然放射性元素丰度之间有正相关关系 ;
短句来源
     A Review on quantifying biological nitrogen fixation based on N-15 natural abundance method
     利用N-15自然丰度法研究固氮植物生物固氮量
短句来源
     CHEMICAL ELEMENT ABUNDANCES IN THE EARTH AND IT'S MAJOR SHELLS
     化学元素的地球丰度
短句来源
查询“自然丰度”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
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。
  natural abundance
Correlation between the Chemical Properties of Elements and Their Natural Abundance in the Context of the Search for Superheavy
      
Bis(dimethyldithiocarbamato)(pyridine)zinc and -copper(II) and Their Benzene Solvates: EPR and Solid-State Natural Abundance (13
      
ESR and solid-state natural abundance 13C CP/MAS NMR study of crystalline alkyl (R = C2H5, i-C3H7, i-C4H9, s-C4H9, and C5H11) xa
      
ESR and solid-state natural abundance 13C CP/MAS NMR study of crystalline alkyl (R = C2H5, i-C3H7, i-C4H9, s-C4H9, and C5H11) xa
      
Their structures and spectroscopic properties were studied by EPR and solid-state natural abundance 13C and 15N CP/MAS NMR spectroscopy.
      
更多          


Natural-abundance 15N and 13C NMR chemical shifts of eight 4-substituted 2 ,2 ,6 ,6-tetramethylpiperidines have been measured. It is found that the 15N chemical shift is correlated with the electronegativity of the 4-substituent, indicating a long-range interaction of the 4-substituent on the 15N chemical shift. A linear relationship is also present between the 13C chemical shifts and the electronegativity of the 4-substituted atoms.

测定了8个4-位取代的2,2,6,6-四甲基哌啶的自然丰度~(15)N核磁共振谱及~(13)C谱,发现4-位取代基对~(15)N化学位移有一定的远程相互作用,~(13)C化学位移与4-位卤素取代基的原子电负性有近似的线性关系。

The IR multiphoton dissociation process of CHClF_2 molecules is studied experimentally m 9R banch of CO_2 laser. It is found that the spectrum of the dissociation yield of ~(12)CHClF_2 molecules has multiple peaks. It is observed that the red shift of the spectrum of the dissociation yield of ~(13)CHClF_2 molecules in natural abundance is 6cm~(-1) at 0.69 J/cm~2 fluence and 5 torr pressure. There is a peak on thc curve of ~(13)C isotope selectivity vs laser frequency. The peak is greater than 10.

在CO_2激光9R支研究CHClF_2分子的红外多光子离解。~(12)CHClF_2分子的离解率谱为多峰。自然丰度下~(13)CHClF_2分子离解率谱红移6cm~(-1)(0.69J/cm~2,5torr)。~(13)C选择性随频率变化的曲线出现单峰,峰值大于10。

The authors express in this article their doubts about the conventionally used term "natural concentration of ore deposit" and suggest to use "natural quality advantages or ore deposit" instead of it. With this, the significance of studying the natural quality advantage of ore deposits, the essential elements and origin of the natural quality, and the relation between natural quality advantage and the value of ore deposits are discussed.

本文对长期以来惯用的"矿床自然丰度"这个术语提出质疑,建议用"矿床禀赋优势"来取代之。文章并对研究矿床禀赋优势的意义、要素、来源和矿床禀赋优势与矿床的价值等问题进行了探讨。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关自然丰度的内容
在知识搜索中查有关自然丰度的内容
在数字搜索中查有关自然丰度的内容
在概念知识元中查有关自然丰度的内容
在学术趋势中查有关自然丰度的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社