查询词典 Zr

The experimental results show that Mn2O3 was main active species and addition of Zr further activated methane molecules to improve methane conversion; C2 selectivity was improved by adding W and P, and suppressed deep oxidation property of SiO2; W–O in catalyst surface was not active species.

通过选取五组该催化剂对其进行XRD、XPS、FT-IR以及SEM表征，表明Mn2O3和Na2Zr(PO4)2是多组分甲烷氧化偶联催化剂的活性组分，且Mn2O3起主要作用，Zr的加入进一步活化了甲烷分子，提高了甲烷的转化率，W和P的加入改善了C2烃的选择性，抑制了SiO2的深度氧化特性；W–O物种不是催化活性物种。

Highly ordered mesoporous Zr-Ce-SBA-15 silica with hexagonal-platelet morphology was synthesized through a hydrothermal route by using pluronic P123 as a template, tetraethyl orthosilicate as a silica source, zirconyl chloride and cerous nitrate as a precursor. The main strategy of this method was to utilize the acidity self-generated from the hydrolysis of inorganic salts in the aqueous solutions, where no addition of mineral acids was necessary.

以P123为模板剂，正硅酸乙酯为硅源，氯化氧锆和硝酸亚铈为无机前驱盐，在不外加无机酸的条件下，利用无机前驱盐自身水解产生的弱酸性环境，通过水热合成路线一步合成了具有大的径轴比、短孔道、六方板状形貌的Zr-Ce-SBA-15介孔材料。

The results indicated that the treatment of increasing top dressing N applying ratio could increase endogenous hormones zeatin riboside ZR(subscript S, isopentenyl adenosine contents and decrease abscise acid contents in flag leaves, and improve photosynthate synthesis, which could increase sucrose contents in flag leaves and supply aplenty of carbon sources for starch synthesis in grains.

结果表明，氮肥后移的处理旗叶中ZR、iPAS含量的增加及ABA含量的减少，有利于光合产物的合成；蔗糖含量较高，为籽粒合成淀粉提供了充足的碳源物质。

The results show that it is difficult to melt Zr into the alloys,but it makes grain refinement and formation of Mg_2Ni phase of the alloy to improve hydrogen absorption performance.The PCT results show that hydrogen absorpt...

利用PCT测试仪测定了合金的储氢性能，结果表明：添加Zr元素的添加能有效降低Mg2Ni的吸放氢温度，并能有效提高提高合金的吸氢量，最高吸氢量达到4.91wt%。

Increased at different extent and the content of GA3 and ZR were all down under drought stress, while the content of IAA had a different trend according to different material. The general trend of coordination among 4 endogenesis hormones was closeing the stoma and promoting the growth of root,whereas the coordination mechanism of different Dactylis glomerata L.

盆栽控水条件下4份鸭茅内源激素变化的研究结果显示，随着干旱胁迫程度的加强，四份鸭茅ABA含量整体呈上升趋势，GA3和ZR的含量则呈下降趋势，IAA的含量因材料不同表现出不同的变化趋势，干旱胁迫下四种内源激素的协调总趋势是向着气孔关闭，促进根系发展的方向进行。

In comparison with the host granite, the dioritic enclaves are higher in Fe, Mg, Ti, Ca and richer in HREE, Sr, but lower in Na, K, Si and poorer in Ba, Th, Hf, Zr.

与寄主花岗岩相比，闪长质包体的Fe、Mg、Ti、Ca含量较高，而Na、K、Si的含量较低；富HREE、Sr，贫Ba、Th、Hf 、Zr。

The third, fine grains are found along the edge of the weld, which is different from the equiaxial dendritic. Its formation has a relationship with the effect of Li, Sc, Zr, Ti on the crystallization of molten pool.

3.2195铝锂合金焊缝边缘存在独特的细晶层组织，其形态与等轴树枝晶不同，这一特征组织的形成与合金元素Li、Sc、Zr和Ti对熔池结晶过程的作用规律有关。

It's found that th e activation of alloy was improved with increasing the concentration,temperature and immersing time of alkaline solution,the reason is that the Zr-rich surface of alloy was conversed to Nirich surface because of the strong erodent action of alkaline solution,this catalyzes ...

实验发现：储氢合金电极的活化性能随碱液浓度增大、温度升高以及浸泡时间的延长得到改善，主要由于KOH的强腐蚀性使合金表面由富Zr层转化为富Ni层，为氢的吸附离解起到催化作用，总结出最佳KOH处理液的实验参数：6mol/L、80℃、浸泡 2 4h ，在此条件下合金电极循环两周即达最大放电容量。

The microstructure of Ti Zr alloy formed under this suitable technologic parameter matching was analyzed by scanning electron microscope. RESULTS: When the ratio of laser power to facular diameter was 2.7 kW/3 mm, the powder feeding speed was 90 r/min and the moving speed of numerical control machine was 5 mm/s, better H (826.61 μm) and W (3504.61 μm) were obtained.

结果： 在激光功率与光斑直径之比为2.7 kW/3 mm，送粉器转速为90 r/min和数控机床的运动速度为5 mm/s等参数下，Ti Zr粉末激光立体成形时具有较好的H和W，分别为826.61 μm和3504.61 μm。

Lately, natural observations and experimental measurements demonstrate that Zr contents in rutile change linearly with temperature and thus can be used as a geothermometer for high-grade metamorphic rock.

最近的自然观察和实验测定发现，金红石中的Zr含量与温度之间存在线性关系，因此能够用于变质岩测温。

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。