查询词典 rare

Through the addition of rare earth oxidation La_2O_3 and CeO_2 into the electrode coating , the effect of rare earth oxidation on high temperature oxidation and sulphidation resistance is studied and the rational addition amount is suggested.

通过A402，A302，A202及Cr24Ni7不锈钢焊条熔敷金属的抗高温氧化腐蚀性能对比试验分析，设计了新的专用焊条合金系统Cr26Nil6，并在焊条药皮中分别添加微量稀土氧化物La2O3及CeO2，研究不同稀土氧化物添加量对焊条熔敷金属在空气中和含硫气氛中抗高温氧化及腐蚀性能的影响，从而确定了合理的稀土氧化物加入量。

Rare earth complexes can coordinated to the surface of sulphonated polystyrene microspheres when the content of EuCl〓 was not saturated. Rare earth complexes may aggregate when the content of EuCl〓 exceed to saturation.

当EuCl〓的含量未达到配合的饱和程度时，稀土配合物均匀地配合在PS微球表面，而当稀土配合物的含量超过微球表面的配位能力之后，稀土配合物就会发生团聚。

The results indicated that: Tripyrazolone, tripodal and crptands ligand L〓, L〓 and L〓 have good coordination ability with rare earth ions Rare earth ions were coordinated with their oxygen and nitrogen atoms.

结果表明，三脚架结构吡唑啉酮、三酸和穴醚配体与稀土离子有较好的配位作用，它是通过氮原子、氧原子与稀土离子配位的。而穴醚配体与稀土离子配位效果却不好。

Taking into account the fact that there is synergistic combination of the mixture stabilizer of the carboxylic ester rare earth salt and organotin mercaptide in thermal stabilization of PVC, we consider it more practial to replace partically the organotin mercaptide by the carboxylic ester rare earth salt.

特别是部分替代有机硫醇锡可发挥它们之间的协同效应，更具有实用性。

Abundance orA repeats was similar to C repeats. AC was a little more than two times as abundant much as AG. However, AT and CG repeats were rare. For tri- and tetramer repeats, AGC,AAAC and AAAT predominated while ACG, ACT, AGG, CCG, ATGC, CCCG, ACTG, AACT, ACGT, AGAT, CCGG,ACCT and AGCT were rare. For some pentamer repeats, one was completely absent on a certain chromosome, even on several chromosomes.

对按蚊基因组中微卫星丰度而言，A碱基和C碱基重复在基因组中丰度相似，AC单元的丰度是AG单元的两倍多，然而AT和CG单元非常稀少；对于三四碱基而言，AGC，AAAC和AAAT单元最为丰富，ACG，ACT，AGG，CCG，ATGC，CCCG，ACTG，AACT，ACGT，AGAT，CCGG，ACCT和AGCT单元等均很稀少，而一些五碱基重复，在某条甚至某几条染色体中均未分布。

The results showed that the addition of the rare earth alloy powder can refine and disperse oxide particles. Through energy spectrum analysis, it was found that the rare earth congregates to Ti and the interface between metal matrix and diamonds. The active La and Ce in alloy powder can reduce the oxide film on Ti particles, increase the reactivity of Ti, and promote the reaction between Ti and diamond.

通过扫描电镜，能谱分析和X射线物相分析、比较和归纳，发现加入适量的稀土-Ni合金粉，使胎体中的氧化物颗粒细小、弥散；在添加稀土合金粉的胎体中，稀土向Ti富集并向金刚石与金属基体界面偏聚。

In this article,the effects of rare earth during the process of magnesium and magnesium alloys melting,including eliminating hydrogen、deoxygenating oxides e and preventing ignition are introduced,the influence and the correlative mechanisms of rare earth in refining the microstructures of magnesium,improving its mechanical properties at elevated temperature and corrosion resistance are also review...

本文主要综述了稀土元素在镁及镁合金熔炼过程中除氢、减少氧化夹杂、阻燃的应用，以及稀土元素对镁合金微观组织结构的细化、高温力学性能的改善和耐蚀性能提高等方面的作用和机理。

We make a nature sanctuary for rare birds, prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in whichwe were particularly interested.

我们为珍稀鸟类设立自然保护区，旨在确保所有物种的绝对安全；然而我们可能发现，一些生命力旺盛的普通鸟类就漫无限制地繁殖而那些我们特别感兴趣的珍稀品种却被驱逐了。

These diamonds are very rare, as rare as pinks or certain blues, but normally not very attractive and much, much cheaper.

这些钻石是非常罕见的，因为罕见东德或某些蓝调，但通常不是非常有吸引力得多，便宜得多。

To succeed in cultivation in one lifetime, one must have theurgies passed on from a master, without which one is sure to fail. But the chances to get theurgies passed on from a master are too rare. To do this, a master must select a disciple instead of a disciple choosing a master, which is very rare.

想用一生就能够修成，必须要有师传神通，没有师传神通肯定修不成，但是能有师传神通的机缘太少了，那是师父找徒弟，不是徒弟找师父，是可遇不可求的事情。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。