查询词典 titanium

Ammoximation of cyclohexanone in the presence of a titanium silicalite (TS 1) catalyst was studied.

摘 要：研究了自制的无机钛硅原料体系TS - 1催化环己酮氨氧化反应，结果表明：钛进入了分子筛的骨架中，构成了TS - 1催化活性中心。

The structural characteristics, such as short bridges, more rigid ligand, larger dihedral angle and different bridging groups, had significant effects on the stability, catalytic activity and polymerization behavior.The polymerizations of cycloolefin were carried out by catalystsβ-diketonate titanium, respectively.

催化剂桥基长度的缩短、两茂环之间的二面角及立体刚性的增大、两桥联基团的结构差异等因素对催化剂的热稳性、聚合活性及共聚情况都有一定的影响。

MATERIALS AND METHODS: A retrospectie analysis of a group of 607 titanium plasma-sprayed cylindric implants placed in regenerated bone, the success and failure rates of which were preiously reported at 6 to 51 months in function, were assessed.

材料和方法：对一组607例位于再生骨内的钛等离子喷涂圆柱形种植体进行了回顾性研究，之前已经对其在6到51个月功能期内的成功率进行过报道。

The decoloration of the six dye was studied in titanium dioxide which was prepared by hydrolysis methods.

经XRD对三种方法制得粉体进行了表征，讨论了三种方法的优缺点。

To study the tensile bond strength between Titanium alloy with different surface roughness and dentin.

研究不同表面粗糙度的钛合金与牙本质之间拉伸粘结强度的差别。

OBJECTIVE: To compare the difference in bond strength between titanium alloy with different surface roughness and dentin.

摘要目的：观察比较不同表面粗糙度的钛合金与牙本质之间拉伸粘接强度差别。

If there is blockage in nanometer titanium deodorization filter net

如果纳米钛除臭净化网的网眼堵塞的话，会对衣服乾燥程度产生影

Boron steels require special deoxidation practices and aluminium and titanium are normally used to prevent combination with other elements.

硼钢要进行特殊的去氧，应避免铝和钛与其他元素组合。

According to the chemical metallurgy principle of self-shielded weld and the analysis on the deoxidization and nitrogen fixation of the metal such as aluminium, titanium,and etc.

根据自保护焊接化学冶金原理，分析了铝、钛等金属对脱氧和固氮的作用，研究了适合自保护焊接合理的焊缝金属化学成

The deuterium desorption behavior of titanium deuteride with oxide layer on the surface in a constant volume system was investigated in the temperature range of 873 to

测定了3种不同氧化层厚度的氘化钛在873～1073K范围内的热解吸反应速率常数，得到673K下氧化5、2h的氘化钛和未经氧化处理的氘化钛热解吸氘的活化能分别为29。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。