化学计量

本研究对了解物种丰度和N对P的相对可利用性、N与Ca，以及P与Ca的化学计量之间关系具有重要意义。

This paper will be useful for studying the relationship between species richness and N to P relative availability , and N and Ca , P and Ca stoichiometry .

我们发现Tf存在一个拐点，在此拐点上样品的结晶度和化学计量比的状态都达到最佳值。

A turning point of Tf was found that at this point the crystallinity and stoichiometry natures were the best .

用化学计量法-分光光度法测定活体叶片中叶绿素a、b的含量

Determination of Chlorophyll a , b in Living Leaves by Chemometrics-Spectrophotometry

在实验上已经发现非化学计量比硫族银化物材料的纵向MR效应，并进行了初步地表征研究。

The longitudinal MR of the non-stoichiometric silver chalcogenide was reported by Hu et al .

利用XRD研究发现，晶格常数a基本保持不变，晶格常数c先减小后增大，这主要和样品中氧的非化学计量比和制备方法有关；

It was explained that these results were related to oxygen nonstoichiometry and preparation methods ;

~（147）Nd同位素稀释亚化学计量法测定聚乙炔中钕

Determination of neodymium in polyacetylene by isotope dilution substoichiometric analysis

控制热解气氛制备近化学计量SiC纤维的研究

Preparation of Nearly Stoichiometric SiC Fibers Derived from PCS by the Control of Atmosphere

亚碲酸铋Bi2TeO5单晶的化学计量比的研究

Investigation of the Stoichiometry of Bismuth Tellurite Bi_2TeO_5 Single Crystals

同时对非化学计量比贮氢合金和低Co、无Co贮氢合金也进行了讨论。

Non-stoichiometric hydrogen storage alloy was also discussed as well as the low-Co and Co-free hydrogen storage alloy .

其本身的氧化还原过程和非化学计量是其氧敏性的根源，在氧过剩的La2NiO4+ā系统中载流子浓度与氧分压的1/6次方成正比。

Its oxygen-sensitivity is related to its oxidation and reduction process and non-stoichiometric ratio .

Zn，Co双掺杂近化学计量比LiNbO3晶体的生长及性能

Growth and Properties of Zn , Co Co-doped Near-stoichiometric LiNbO_3 Crystal

含锡AB5型非化学计量贮氢合金Ⅰ.合金的结构

Structure of Sn Doped AB_5 Non Stoichiometric Hydrogen Absorbing Alloys

反应堆中子活化-多元素亚化学计量分离法测定生物和半导体材料中的Cu，Na，Au

Determination of cu , Na and Au in biological materials and semicon-ductors by neutron activation-sub-stoichiometric multielement separation

非化学计量C2S的研究

A study of non-stoichiometric C2S

基于非化学计量化合物TiO（2-σ）的铜离子敏感电极研究

Copper (ⅱ) Sensitive Electrode Based on Nonstoichiometric Compound TiO 2 - σ

从试验中得出，这些影响因素包括pH、催化剂的投加方式、催化剂与氧化剂的化学计量数以及反应时间等。

These Influence factors include pH value , the mode of adding catalyst , weight ratio of catalyst and oxidant , and reaction time .

非化学计量Bi2O3对制备Bi4Ti3O（12）粉体影响的研究

The influence of nonstoichiometry Bi_2O_3 on the growth of Bi_4Ti_3O_ ( 12 ) powder

非化学计量比Gd5Si2Ge2合金的磁热性能研究

Study on the magnetocaloric property of non-stoichiometric Gd_5Si_2Ge_2 alloy

AB5型非化学计量贮氢合金电极过程动力学研究

Electrochemical Kinetics of AB_5 Non-Stoichiometric Hydrogen-Absorbing Alloys

反应气体化学计量比对PEMFC超调的影响

Influence of stoichiometry of reacting gases on the overshoot behavior of PEMFC

非化学计量相DO3型Fe3Al中Al活度的测定

Measurement of activity of Al in nonstoichiometric phase DO_3-Fe_3Al

SPS反应烧结不同化学计量比硼-碳陶瓷

Preparation of Stoichiometric Boron-Carbon Ceramics by Spark Plasma Sintering

混合掺杂ZnO薄膜在550℃和600℃退火时都可以形成良好的c择优取向，化学计量比接近1，并且电阻率都有很大提高。

Co-doped ZnO thin films possessed preferred c-axis orientation , good stoichiometry ratio and quite high resistivity when annealed at both 600 ℃ and 550 ℃ .

通过X-Ray对熔渣物相分析，发现其中含有大量的非化学计量化合物Fe2MnTi3O（10）。

Through X-Ray analyse the phase of slag , there are many nonstoichiometric compound Fe_2MnTi_3O_ ( 10 ) in it .

K2O助溶剂提拉法和富锂提拉法生长的近化学计量比LiNbO3晶体性质的比较

Properties Comparison of Near Stoichiometric LiNbO_3 Crystals Grown by K_2O Flux Czochralski Method and Li Rich Czochralski Method

非化学计量比SbOx薄膜的结晶动力学研究

Crystallization kinetics of non-stoichiometric SbO_x thin films

用助熔剂缓冷法培养出化学计量比的发光单晶体Na5HO（WO4）4。

A novel luminescent crystal of Na_5Ho ( WO_4 ) _4 is grown from stoichiometric melts by flux method .

非化学计量比对贮氢合金Mm（NiCoMnAl）5Bx电化学性能的影响

Influences of nonstoichiometric ratio on the electrochemical properties of Mm ( NiCoMnAl ) _5B_x hydrogen storage alloys

非化学计量比制备纯MgTiO3和Mg2SiO4及其性能

Preparation of Pure MgTiO_3 and Mg_2SiO_4 by Using Non-stoichiometry Method and Its Characterization

这些方法存在原子经济性差，需要化学计量的无机酸或Lewis酸，使用有毒试剂和产率低等缺点。

However , these routes suffer from poor atom-economic , stoichiometric amounts of mineral or Lewis acids , toxic reagents and poor yields .