查询词典 Zr

Based on the analysis of the Jahn-Teller effect,vibronic interaction and the resolution of group representations, the possiblegcometrical configurations of 〓 have been derived for the first time, the results arein good agreement with the calculation esults.Firstly, the reasonable dissociative limits for the diatomic molecules of ZrCo,ZrH, CoH, UH,〓 and AlNi have been derived based on the Atomic and MolecularReactive Statics and the resolution of group representations. The groundelectronic states, which are 〓,〓,〓 and 〓 respectively for thesemolecules, have also been optimized based on the RECP method.

本文根据相对论有效原子实势和密度泛函理论方法(B3LYP／SDD与B3LYP／6-311G〓)，用Gaussian-98W程序研究了ZrCo、ZrH、CoH、UH、〓、AlNi、〓、HZrCo和〓分子的分子结构、分析势能函数、微观力学性质和光谱性质；首次建立了计算固体金属氢化物体系宏观性质理论模型，并应用于ZrCo、Zr和Co的氢化反应体系研究，理论计算与实验结果基本一致；基于Monte-Carlo准经典轨线方法，首次研究了H与ZrCo和Co与HZr的分子反应动力学。

The Isocon analyses also shows that the altered quartz sandstone of the Salitashi deposit which enriches in Cd, As, Ba, Sb, Ag, Co, Ni and Fe, gained Pb, Zn, Cd, Ag, Co, but lost Mn, Zr, Ba, V and Cr during it alteration, the ore and its dolomitized limestones intensively enrich in Ag, Cd, As, V, Cr, Co, Ni and Cu also.

矿石中强烈富集Ag、Cd、As和过渡族元素V、Cr、Co、Ni、Cu，且Cr、Co、Ni在矿石中的富集程度远远高于矿区碎屑岩，近矿白云质灰岩具有和矿石相近的元素富集特征，该矿床的早期矿化和后期的改造成矿作用都与深部岩浆去气有关。

The metamorphic peridotites display SiO2 (39.08%~40.45%),TiO2 (0.02%~0.03%), Mg′(87.10~90.33). The metamorphic gabbros show geochemical characteristics of enriched in LILE, and depleted in HFSE. Furthermore, there are some high-Mg diorites exposed. In summary, the Daomaoqi ophiolitic mélange formed in a supra-subduction zone.

其中，变质橄榄岩类SiO2含量为39.08%~40.45%，TiO2含量为0.02%~0.03%，Mg′为87.10~90.33，；变质辉长岩表现为大离子亲石元素K、Rb、Sr、Ba明显富集，高场强元素Nb、Ta、Zr相对亏损，以及高镁闪长岩的出露都与SSZ型蛇绿岩特点相符。

The vibration energy or the electronic and vibration entropy of the gaseous molecules are approximately used as the energy or entropy of the solid. In this approximation, thermodynamic functions 、、 and hydrogen isotopes equilibrium pressure of the hydrogenating reaction have been calculated .Then we can fit the relations between temperature and equilibrium pressure.

在ZrH2的E和S的过程中，以气态分子总能量中的振动能EV代替该分子处于固态时的振动能量E，以电子和振动熵SEV代替分子处于固态熵的近似方法，计算了不同温度下金属Zr与氢同位素反应的，和以及氢化反应平衡压力，并导出了氢化反应平衡压力与温度的关系。

It is found that Ni is an indispensable element in Zr-based Laves phase hydrogen storage electrode.

本文首先综述了国内外金属氢化物-镍电池及锆系Laves相贮氢电极的研究进展情况。

XRD, SEM and EDAX tests showed the Zr-based Laves phase alloy consists of at least 8 phases.

本文首先综述了国内外金属氢化物-镍电池及锆系Laves相贮氢电极的研究进展情况。

The P-C-T curves and the heat of formation ΔH of some Zr-based Laves phase hydrides were measured by electrochemical method.

合金中含有一定数量的晶胞体积较大的第二相有益于锆系Laves相的电化学性能。

The results showed that the content of Z+ZR was highest at different developmental stages and parts , followed with IAA. The contents of GA 3 and ABA were very low. Generally levels of hormones were highest in culm, followed by sheathes and leaves the lowest .

结果显示：茭白植株生育过程中各部位的激素以玉米素及玉米素核苷的含量最高，生长素其次，赤霉素（ GA 3 ）和脱落酸含量很低；在各部位间总体以茎尖最高，叶鞘其次，叶片最低。

Results The SiO2-ZrO2 composites were calcined at 200℃ prior to sulfating, the concentration of sulfuric acid was 1.0 mol/L ,the molar ratio of Si and Zr was 15, the calcination temperature was 500℃, the molar ratio of ethynol and lactic acid is 3/1, the yield of the ester could reach 92.7%.

结果SO4^2-／SiO2-ZrO2固体超强酸催化乳酸乙酯的合成反应适宜的反应条件为：预焙烧温度为200℃，浸泡硫酸浓度为1.0mol／L，硅锆摩尔比为15，焙烧温度为500℃，醇酸比为3时，酯化率可达92.79／6。

In the orthogonal designable experiment ,the analysis results of zirconium source, precipitation , the sulfating agent is 1.54%, 2.27%, 5.11%,respectively. This result show that the influence of sulfating agent to the catalytic activity is the biggest. Under the same density of the sulfuric acid soaks, the effect of sulfuric acid is well compared to ammonium sulfate .The second is the precipitation, but the influence of the zirconia source is the smallest.

正交设计实验中锆源、沉淀剂、硫酸化试剂的极差分析结果分别为1.54%，2.27%，5.11%，此结果说明硫酸化试剂对催化剂的影响最大，其次是沉淀剂，锆源的影响最小，同时表明以Zr(NO3)4·5H2O为锆源、乙胺为沉淀剂、硫酸为硫酸化试剂是催化剂的最佳制备方案。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。