查询词典 Zr

Consequently, the improvement of cycle life is described as the partial substitution of Zr for Mg in the alloy.

XRD结构分析表明：主相仍为Mg↓2Ni； Zr替代Mg使合金的微晶结构发生了改变，趋于非晶化；添加Zr的合金的容量比由扩散法合成的合金的容量有所提高；合金中添加Zr，提高了电极的放电容量，增大了放电平台；特别是Zr 对六方晶系Mg2Ni合金结构中Mg的部分取代大幅度提高了电极的循环寿命，未经任何处理的 Mg1.4Zr0.6Ni合金电极经25个循环后，放电容量仅衰减4.11%，表明添加Zr对提高合金的循环寿命具有重要的作用。

Under such a solidification condition that the growth rate is low and the temperature gradient ahead of the solidi fication front is steep, a large amount of α-Al nuclei can be produced by peritectic reaction, during which only metastable Al〓Zr particles or very fine equilibrium Al〓Zr particles rather than larger equilibrium Al〓Zr partiles are involved.

在低的生长速度和高的界面前沿温度梯度条件下，结晶前沿Al〓Zr粒子与液态铝发生包晶反应（只涉及亚稳Al〓Zr或尺寸极小的平衡Al〓Zr，而不涉及尺寸较大的平衡Al〓Zr）产生大量α晶胚，α晶胚呈球面生长，最终形成等轴非枝晶形态。

The better condition synthesizing the assorted minerals of zirconolite and sphene doping neodymium is holding 30 min at 1230℃, and the better formula is nCa(subscript 1-x/2-y/4 Zr(subscript 1-y/4);Al(subscript x/2) Ti(subscript 2-x/2O7): nCa(subscript 1-x NdAl Ti(subscript 1-x)SiO5[4/(4-y)]:1. Nd(superscript 3+) can enter crystal lattices of ite and sphene. Sphene can immobilize Zr(subscript 4+), Al(subscript 3+) and Nd(subscript 3+); Zr(subscript 4+) and Nd(subscript 3+) replace Ca(subscript 2+), and Al(subscript 3+) replaces Ti(subscript 4+). Zirconolite can immobilize Al(subscript 3+) and Nd(subscript 3+) Nd(subscript 3+) replaces Ca(subscript 2+) and Zr(subscript 4+), and Al(subscript 3+) and replaces Ti(subscript 4+).

研究表明：钙钛锆石和榍石组合矿物固化体较佳的合成条件是在1230℃条件下保温30min，较佳配方的摩尔比为nCa(下标 1-x/2-y/4 Nd(下标 x+y/2)Zr(下标 1-y/4)Al(下标 x/2)Ti(下标 2-x/2) O7：nCa(下标 1-x Nd Ti(下标 1-x)-SiO5=[4/(4-y)]：1；Nd(上标 3+)能够进入钙钛锆石和榍石晶格，榍石能够固溶Zr(上标 4+)、Al(上标 3+)、Nd(上标 3+)，Zr(上标 4+)和Nd(上标 3+)取代Ca(上标 2+)位，Al(上标 3+)占据Ti(上标 4+)位，钙钛锆石能够固溶Al(上标 3+)、Nd(上标 3+)，Nd(上标 3+)进入Ca(上标 2+)位和Zr(上标 3+)位，Al(上标 3+)占据Ti(上标 4+)位。

This paper has studied the physiological and biochemical changes during the period of forming strong buds of tree peony, and expect to provide academic basis for extending its view value and economic benefit . The main results are as the following:1 Under the field condition, Characteristics of photosynthesis of tree peony are very regular. From before blooming to the prophase of abducting buds that after blooming ,that is April,May and June,the net photosynthetic rate of tree peony is higher than the other period .It indicates that this period is very important for accumulating photosynthetic products of tree peony . So, if we want to get quality flower of tree peony ,it is very important to strengthen the management of tree peony cultivation and to ensure provide the fertilizer and water.2 From the middle ten days of June, with the time elapsing and with the environment conditions worsening, the characteristics of photosynthesis of tree peony decline deeply. But it is different among different tree peony breeds. For example , cv. Wu Long Peng Sheng can also has higher net photosynthetic rate, it indicates that cv. Wu Long Peng Sheng is super than the other two tree peony breeds when adapting the environment conditions and cv. Wu Long Peng Sheng has wide prospect to extend .3 The main factors of effecting the characteristics of photosynthesis are stomatal factor and non-stomatal factor ,that is the ability of photosynthesis of leaf cells. Under the environment of high light intensity in midsummer, if overshadow tree peony properly, then it can slow the declining of chlorophyll content, and increase the net photosynthetic rate and benefit for the accumulating of photosynthetic products.4 The content of soluble sugar in the root of tree peony is the highest among different organs during the period of forming strong buds . According to analyse ,we believe that the soluble sugar will compose starch then, and provide the solid base of material for the growth and development next year. It provide us strong academic basis of adopting the method of cultivating root and protecting root under thefield environment conditions .In other words ,it will help to increase the health level of the whole plant of tree peony and will be beneficial to forming quality tree peony flower if we strengthen the management of root. 5 To tree peony, the endogenesis hormone is important for its growth and development .In the prophase ,that is about the blooming of tree peony and the mid-summer ,IAA and ZR contents are higher and GA content is lower and its changes are very little, and the content of ABA is decreasing . This indicates that IAA and ZR act the important promote function for growth and development of tree peony in this period, and the function of GA is not important. Bur in the period of anniversary senescence of tree peony , the content of IAA and ZR begin to decrease ,while the ABA content has a certain rebound .T

本研究对几个牡丹品种壮芽形成过程中的某些生理生化变化做了研究，以期了解牡丹生长发育过程中生理生化的变化规律，探讨大田栽培条件下提高牡丹花质量的栽培措施和管理技术，为提高牡丹的观赏价值和经济效益提供理论依据，结果如下：1 大田栽培条件下，牡丹光合特性在生长发育过程中表现出极强的规律性，牡丹各品种的光合速率从牡丹开花前，到牡丹花谢后的花芽诱导期前期（6月10日之前），也就是在4、5、6月份，各牡丹品种的净光合速率相对与其他时间都维持在比较高的水平，这说明，在这段时间，是牡丹光合产物积累的重要时期，因此，要保证得到高质量的牡丹花，在这段时间加强对牡丹的栽培管理，保证这个时期的肥水供应十分重要。2 从6月中旬后，随时间的推移，环境条件的恶化，牡丹的光合性能剧烈下降，但是不同牡丹品种间仍有差异，比如，乌龙捧盛仍可维持较高的光合水平，这说明了乌龙捧盛这个牡丹品种对于环境的适应性较之其他牡丹品种高，有着广泛的推广前景。3 影响牡丹光合性能的主要因子是气孔因素和非气孔因素即叶肉细胞的光合能力，在盛夏高温高光强的环境条件下，对牡丹进行适当遮荫，能缓解牡丹叶绿素水平的下降，适当提高Pn，有利于光合产物的积累。4 可溶性糖在牡丹各品种的壮芽形成过程中，根中可溶性糖的含量在牡丹各部位中始终维持最高水平，分析认为这些可溶性糖在根系中进一步合成淀粉等储藏性物质，为来年牡丹的生长提供雄厚的物质基础，这为我们在大田栽培条件下对牡丹采取养根护根的栽培措施提供了有力的理论依据，即在大田栽培条件下，加强对牡丹根系的管理，有助于提高牡丹整株的健壮程度，有益于形成高质量的牡丹花。5内源激素对牡丹的生长发育调节作用是十分明显的，在前期，即开花前后和盛夏，IAA和ZR含量维持在比较高的水平，GA含量低且变化不明显，ABA含量逐渐降低，说明了IAA和ZR对牡丹在这段时间内的生长发育起到重要的促进作用，GA的作用不是很明显，ABA可能在高温高光强下有明显的升高，也说明了ABA的确有一些促进作用，但是到了牡丹周年衰老期，IAA和ZR的含量开始下降，ABA含量却有了一定程度的反弹，说明了IAA和ZR的作用开始降低，ABA起到了促进衰老的作用

This work concentrated on Zr geochemistry of gabbro minerals, high-pressure and retrograde minerals in eclogites in the Dabie orogen. We observed that the clinopyroxene in protolith gabbro is the major Zr-bearing mineral and the titanite has high Zr contents also.

通过大别山超高压变质岩的原岩矿物、榴辉岩中高压矿物和退变质矿物的Zr的地球化学研究，发现辉长岩中辉石是主要富Zr矿物相，副矿物榍石具有较高的Zr含量。

This work concentrated on Zr geochemistry of gabbro minerals, high-pressure and retrograde minerals in eclogites in the Dabie orogen. We observed that the clinopyroxene in protolith gabbro is the major Zr-bearing mineral and the titanite has high Zr contents also.

中文摘要：通过大别山超高压变质岩的原岩矿物、榴辉岩中高压矿物和退变质矿物的Zr的地球化学研究，发现辉长岩中辉石是主要富Zr矿物相，副矿物榍石具有较高的Zr含量。

The calculated results showed that the structural energy and atom binding energy of α-Zr are lower than those of α-Mg,and the Mg/Zr interface energy is lower than the surface energy of Mg,which,in an energetical point,explains the experimental phenomenon.

采用递归法计算了α-Mg与α-Zr的结构能、原子结合能，Mg/Zr界面能与Mg/液态Mg界面能，Mg中Zr及Zr中Fe，Mn，Si等杂质原子相互作用能。

The kinetic behaviors of ethylene homo- olymerization and ethylene / l-hexene co-polymerization , catalyzed by the metallocene catalyst PS-DVB-MC in an 0.5 L stainless steel reactor , were studied. The effects of polymerization conditions on ethylene polymerization , such as concentration of catalyst , temperature of polymerization , pressure of ethylene , molar ratio of AI / Z r , etc ., were also investigated . Some leading results were as follows : the activity of the catalyst PS–DVB- MC for ethylene homo-polymerization was high ( 1.053 x 107 gPE / mol Zr·h ), but the molar ratio of AI / Zr was low ( 350:1 ); the catalytic ability for ethyleneα-olefin ( such as l hexene etc .) co-olymerization was great , and the corresponding activity come up to a maximum of 1.753 x 107 gPE / mol Zr·h while concenlration of l-hexene was 0.080 mol / L ; the molecular weight of polyethylene was about 180,000 , meanwhile the molecular weight distribution was narrow ( 2.19 ); the bulk density of polyethylene and ethylene / l-hexene co -polymer were 0.25 and 0.34 respectively .

采用0.5L高压不锈钢反应釜，对催化剂PS–DVB-MC催化乙烯均聚和乙烯/ l-己烯共聚合的动力学行为进行了研究，详细考察了催化剂浓度、反应温度、压力、Al/ Zr比、1-己烯浓度等因素对乙烯聚合反应的影响，得到如下主要结论：催化剂PS-DVB-MC具有催化乙烯均聚的高活性(1.053×107g PE / mo1 zr.hr)，低Al / Zr比( 350：1 )；具有良好的催化乙烯与α-烯烃(如1-己烯等)共聚的能力，在1-己烯浓度为0.080 mol / L时，催化活性达到最大(1.783×107 g PE / molZr.hr)；乙烯均聚产物的分子量在18万左右，分子量分布窄( 2.19 )。

In this present work, we have synthesized three types of solid superacid with different structure of molecular sieves by sulfating zirconium silicalite molecular sieves, namely SO〓/Zr-ZSM-5, SO〓/Zr-ZMS-11 and SO〓/Zr-HMS.

本研究中，我们通过硫酸促进锆硅分子筛的方法，合成出了三种具有不同分子筛结构的固体超强酸催化剂，即SO〓／Zr—ZSM—5，SO〓／Zr—ZMS—11和SO〓／Zr—HMS。

The results show that, the coefficients of welded joints are both greater than 0.9, but the yield strength of weld joint filled with Al-Mg-Zr-Sc welding wire is greater 100 MPa than that of filled with Al-Mg-Zr welding wire. It indicates that the Al-Mg-Zr-Sc welding wire is the best alteration of filling materials to weld of Al-Mg-Sc alloy.

但采用Al-Mg-Zr-Sc合金焊丝为填充材料时，焊缝晶粒组织明显细化，熔合区形成的细小等轴晶层提高了基材与焊缝填充材料的结合力，焊接接头的屈服强度比采用Al-Mg-Zr合金焊丝为填充材料时提高了100 MPa，显著提高了Al-Mg-Sc合金焊接构件的许用强度，因此焊接Al-Mg-Sc板材更宜采用Al-Mg-Sc-Zr焊丝。

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。