查询词典 Ti

Ti-Si composite materials are mixed at atomic scale, and Ti-O-Si bond appears in all of the samples with different TiO2 content; the mixed oxides are mainly existed in the form of amorphous pattern, anatase appears when the TiO2 content is more than 80%, but compared with the intension of pure TiO2, it has not integrate structure. The acetic content has great influence in the specific area and crystal structure of the mixed oxides. 20TiSi has good heat stability, still possesses 11m2/g after calcined at 1100℃; calcinations on the large scale of temperature does not cause the break of Ti-O-Si bond, TiO2 is well dispersed in 20TiSi calcined at 1100℃, and it still existed in the form of amorphous.

结果表明：制得的Ti-Si复合氧化物具有很高的比表面积，在TiO_2含量为10％时达到681.5m~2／g，Ti原子进入Si-O四面体结构中，形成Si-O-Ti键，复合氧化物的稳定性好，当TiO_2含量低于60 wt％时，以无定型形式存在；当含量为80％时，出现锐钛矿型TiO_2，但与纯TiO_2相比晶型不完整：醋酸对Ti-Si复合氧化物的比表面积、晶型都有很大的影响；TiO_2含量为20％的20TiSi经1100℃高温焙烧后，仍有较高的比表面积(11m~2／g)，稳定性好，在较宽的温度范围内焙烧，没有引起Ti-O-Si键的断裂，分散度高，没有出现晶型TiO_2。

The density of active centers increases first and then decreases with the increase of the amount of Ti.(3)The activity of hydrogenolysis decreases with the increase of the a

另外，当催化剂中Ti的含量在0.25—1.0％时，上述各种参数随Ti量而变化的幅度不大，这可能是因为催化剂中未被还原的Ti~(4+)具有增强Pt的活性的作用，因此它部分抵消了Ti~或Ti~0所起的减弱Pt的活性的作用。

Being combining with products distribution in styrene oxidation, we propose the styrene epoxidation carry out with Ti metallacyclo intermediates, And at the same time Ti-ZSM-5 have properties both catalytic epoxidation and acid-catalysis, namely the skeletal Ti can catalyze styrene epoxidation to styrene oxide and the skeletal Ti and Al can provide Lewis acid site to cause the rearrangement of styrene oxide to phenylacetaldehyde rapidly, the solvolysis to glycols and the cleavage of C=C double bond. Ti-ZSM-5 can also provide Bronsted acid site simultaneously, which is also catalytic center for the solvolysis to glycols.

同时结合Ti-ZSM-5催化选择性氧化苯乙烯反应的产物分布结果，提出苯乙烯环氧化反应可能是通过金属有机环机理进行；Ti-ZSM-5同时具有催化环氧化和酸催化两种功能，其骨架钛可催化苯乙烯环氧化生成环氧苯乙烷，而骨架钛和骨架铝等可提供Lewis酸位使环氧苯乙烷迅速发生重排生成苯乙醛从而使其成为反应的主要产物，同时还可发生加成以及碳碳键的裂解等副反应：Ti-ZSM-5也提供Bronsted酸位，它也是生成加成产物的活性中心。

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。

The hydrogen precipitation of different metals, platinum, lead, nickel, iron and titanium, were discussed in different pH value and current density. By using Cyclic Voltammetry to study the reduction reaction, copper, titanium, lead, Ti/PbO2 and Ti/MnO2 as cathode respectively, it is proved that sodium metaborate can be electrochemically reduced to sodium borohydride. The kinetic parameters and fractal dimension of these electrode, graphite, lead iron Ti/PbO2 and Ti/MnOa etc, will be researched.

采用循环伏安法，分别以铜、钛、铅、钛、Ti／PbO_2和Ti／MnO_2作为阴极，对该反应进行实验研究，证实了偏硼酸钠电化学还原制各硼氢化钠的可能性；分别对石墨、铅、铁、Ti／PbO_2和Ti／MnO_2等电极在本实验体系中的电极动力学参数(a，b，i_0)及分形维数进行了讨论，认为Ti／PbO_2为该体系中的最佳电极材太原理工大学硕士研究生学位论文料。

The theoreti cal results show that in Al-rich region of the ordered TiAl alloy,the surplus a toms of Al which occupy the lattices of Ti will decrease the energy of the syste m,in favour of the stability of γ-TiAl phase,while in the Ti-rich region, the surplus atoms of Ti which occupy the lattic of Al will increase the energy o f the system,which disfavors the stability of γ-TiAl phase,and favors the formation of new phase.

理论结果表明有序的γ-TiAl相在富 Al区，多余的Al原子占据Ti的格点后，系统能量降低，有利于γ-TiAl相的稳定性，而在富Ti区，多余的Ti原子占据Al的格点后，将使所有的Ti原子的能量增大，使系统能量升高，不利于γ-TiAl相的稳定性，而有利于新相的形成。

Results show that MoS2-Ti composite coatings grow in islands pattern, their cross-section appear to be dense columnar structure.

结果表明：不同Ti含量的MoS2-Ti复合薄膜呈岛状生长模式，断面呈致密细柱状，结晶状态均为无定形态；薄膜的显微硬度随Ti含量增加而升高；MoS2-Ti复合薄膜在大气中的摩擦磨损性能优于MoS2薄膜，掺杂适当Ti可以使MoS2-Ti复合薄膜的摩擦曲线波动减小，耐磨寿命提高，在本试验研究范围内，含30%Ti复合薄膜的耐磨寿命最长，当Ti掺杂量达到50%时MoS2-Ti复合薄膜失去润滑性能。

As a result, some ideas about the fabrication are put forward.The EPMA experiment results show that the main element such as W, Mo, Ti, Ni, Cu, Fe element are changed gradually in W-Mo and W-Mo-Ti FGM. In the layer rich in W, the grain are intervained and are mixed mechanismly. The same is to the layer rich in Mo and W-Mo. These grain felt up by some sinter. In Mo-Ti layer rich in Mo, the grains are also mixed mechanismly. Ni, Cu, Fe element assembled at interface. Ni melt by Cu plays an vital role in sinter effect. The microstructure characteristics result show that the compactness of W-Mo and W-Mo-Ti FGM is good.

电子探针实验结果表明W-Mo系、W-Mo-Ti系梯度功能材料中主要元素W、Mo、Ti、Ni、Fe、Cu分布整体上具有梯度变化规律，发现富W区、富Mo区、W-Mo混合区中颗粒交错分布，基本上以机械混合的形式存在，颗粒之间主要靠烧结剂的粘结作用实现致密化；以Mo为主要组分的Mo-Ti混合区，也是以机械混合的形式存在；Cu溶解于Ni形成固溶体更好地起到活化烧结能力，Ni、Cu、Fe在宏观层间界面富集，有利于烧结致密化。

The scale formed on pure Ti is exclusively TiO2 regardless of temperature, while the scales formed onTi3Al and Ti3Al+TiAl were duplex and always spalled after cooling, consisting of the outer-layer of most TiO2 and the inner-layer of most TiO2, Al2O3, and minor Ti(subscript 1-x)S. The formation of Al2O3 is responsible for the reduction in the corrosion rates of Ti-Al alloys as compared to those of pure Ti.

纯Ti在800～1000℃的腐蚀生成物皆是TiO2，而Ti3Al和Ti3Al+TiAl则形成两层易剥落的腐蚀物，包括外层的TiO2，及内层多量TiO2和少量的Al2O3和微量的Ti(下标 1-x)S，其中，Al2O3的生成是造成Ti3Al和Ti3Al+TiAl合金腐蚀速率较纯Ti为低的主因。

The results show that the film growth conditions strongly affect the mechanical properties of the Ti-O layers on top of the TiN-covered Ti substrates.For example,the TiN/Ti-O composite films display excelle...

结果表明，在钛合金表面制备TiN薄膜后，逐渐降低N2流量至0 sccm，沉积一层Ti膜，再用逐渐通入O2制备Ti-O薄膜的工艺制备的TiN/Ti-N/Ti/Ti-O薄膜具有较好的力学性能。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。