1.
A GC/MS METHOD TO ASSESS ~(15)N RATIOS IN SOIL AMINO SUGARS AND AMINO ACID ENANTIOMERS
测定土壤氨基糖和氨基酸手性异构体中氮同位素比值的气相色谱/质谱方法
2.
isotopic ratio in Mars atmosphere
火星大气的同位素比值
3.
Comparison of lead concentration and isotope ratios in children's blood and hair
同体儿童血、发铅浓度及同位素比值研究
4.
The Origin Differentiation of Seized Heroin Us-ing GC-C-IRMS II--Study on the ~(13)C Isotope RatioMass Spectrometry of Seized Heroin;
同位素比值质谱法鉴别缴获的海洛因来源——2.海洛因的碳同位素比值质谱法研究
5.
Laser Resonant Ionization Processes of Lead Atom for the Measurement of Lead Isotopes Ratio;
铅同位素比值测定的激光共振电离研究
6.
Error Estimation of Initail Ritios of Sr-Nd Isotopic and Nd Model Age
Sr-Nd同位素初始比值和Nd模式年龄的误差估算
7.
Detection of palm oil adulterated into corn oil by carbon isotope ratio method
碳同位素比值法检测棕榈油掺入玉米油的研究
8.
Study on the Spatial Distribution of Leaf N Content and SPAD Value in Cotton
棉花氮素和SPAD值叶位分布规律研究
9.
Effect of Different Nitrogen Forms and Ratioes on Carbon-Nitrogen Metablism of Flue-Cured Tobacco Leaves;
不同氮素形态配比对烤烟叶片碳氮代谢的影响
10.
Determination of lead isotope ratios in soil by inductively coupled plasma mass spectrometry and comparison of source differentiation
ICP-MS测定土壤中铅同位素比值及地域差异性比较
11.
Determination of Lead Isotope Ratios of Tobacco by ICP-MS and Their Areal Difference
烟叶中Pb同位素比值的ICP-MS测定及地域差异比较
12.
Study on the Determination and Application of Nitrogen、Oxygen and Boron Isotopes;
氮、氧、硼同位素的测定及其应用研究
13.
Nutrient leaching characteristics of bulk blending fertilizer of controlled release nitrogen with different controlled nitrogen ratio
不同控释氮比例的控释氮掺混肥氮素淋失特征研究
14.
gas isotope ratio mass spectrometer
气体同位素比质谱计
15.
CHANGES OF STABLE ISOTOPES CARBON-13 AND NITROGEN-15 IN DIFFERENT TISSUES OF CATTLE
稳定性同位素碳、氮在牛不同组织中的变化规律
16.
Effects of NH_4~+/NO_3~-ratio on nitrogen distribution,photosynthetic parameter and yield of potato
不同形态氮素比对马铃薯氮素分布、光合参数及产量的影响
17.
Effects of AMF on key enzymes of nitrogen assimilation in maize Under different ammonium to nitrate ratios
不同氮素形态比例条件下接种AMF对玉米氮同化关键酶的影响
18.
Determination of Lead Isotope Ratio by Dual Gas Flow-Laser Ablation-Inductively Coupled Plasma-Mass Spectroemtry
双气流路-激光剥蚀电感耦合等离子体质谱测定铅同位素比值