scandium

1. With scandium and yttrium, they make up the rare earth metals.: 加上钪和钇，一起组成稀土金属。

2. Scandium-modified Al alloys are a new kind of high performance alloys.: 钪改性的铝合金是一类高性能新型铝合金。

3. They comprise preferably indium, scandium, yttrium, rare earth metals and zirconium.: 它们优选包括铟、钪、钇、稀土金属和锆。

4. They turned out to be the undiscovered elements scandium, gallium, technetium and germanium.: 那时还没发现的元素就是钪，镓，锗和锝。

5. The distribution in nature, application, and extraction technology of scandium are introduced.: 论述了稀散元素钪在自然界中的分布、应用状况及提取技术。

6. The purity 99.99% of scandium oxide (sc 2o 3) was prepared from tungstenic slag with extraction process.: 用萃取法从钨矿渣制得纯度为99.99%的氧化钪。

7. Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium or of mixtures of these metals.: 稀土金属、钇、钪及其混合物的无机或有机化合物。

8. ABSTRACT Rare earth is a collective name for 17 elements including ytterbium (Yb), scandium (Sc), and lanthanide series.: 提要稀土是化学元素周期表中的镧系元素和化学性质相似的钇、钪共17种元素的统称。

9. It is not as though the rare-earth elements-scandium, yttrium and lanthanum plus the 14 so-called lanthanides-are all that rare.: 并非所有稀土元素都像钪、钇、镧加上14所谓的镧系元素那样稀少。

10. Under the optimum technology condition, we can get the anhydrous scandium chloride molten salt whose hydrolysis rate is2.3%.: 在此工艺条件下，制得的无水氯化钪熔盐中钪的水解率为2.3%。

11. Then the new technology in preparation of high purity scandium metal was proposed and its purification mechanism was discussed.: 然后给出了用真空蒸馏法制备高纯金属钪的新工艺，并对其提纯机制作了探讨。

12. Lanthanum, Cerium, Praseodymium, Holmium and Scandium from a mixture of rare earth elements can also obtained, This method is being us...: 在轻重混合稀土中能单独分离镧、铈、镨、钬、钪。本方法能用于分离、测定独居石中的稀土元素。

13. Lanthanum, Cerium, Praseodymium, Holmium and Scandium from a mixture of rare earth elements can also obtained, This method is being used in...: 在轻重混合稀土中能单独分离镧、铈、镨、钬、钪。本方法能用于分离、测定独居石中的稀土元素。

14. Rare earth metal: Any of a large class of chemical elements including scandium (atomic number 21), yttrium (39), and the 15 elements from 57 (lanthanum) to 71.: 稀土金属：一个化学元素大家族中的任何一种，包括钪(原子序21)、钇(原子序39)以及从57号元素(镧)到71号元素。

15. There are also somedeficiency for this kind of alloy, for example, the primary problem with thealloy is that it is made of 20 percent scandium, which is extremely expensive.: 这种材料也存在不足之处，例如，最基本的问题就是昂贵的金属钪含量占到了20%。

16. With scandium and yttrium they make up the rare earth metals. their atoms have similar configurations and similar physical and chemical behaviour; the most common valences are3and4: 加上钪和钇，一起组成稀土金属。它们的原子都有相似的配置，以及相似的物理和化学行为，最常见的原子价是3和4。

17. The effects of scandium on the recrystallization of aluminium-lithium alloy are investigated by measuring the vickers hardness of the testing alloys and by observing their microstructures.: 通过硬度测量和微观金相观察，研究了钪对铝锂合金再结晶过程的影响。

18. For example the NC State research teamcombined lithium, magnesium, titanium, aluminum and scandium to make ananocrystalline high-entropy alloy that has low density, but very high strength.: 例如，北卡罗莱纳州立大学的科研团队利用锂、镁、钛、铝以及钪合成了一种纳米晶体高熵合金，该合金密度低，但强度却很高。

19. Lead scandium tantalate ceramics exhibit excellent dielectric, piezoelectric, and ferroelectric properties, but need rather higher sintering temperature and possess lower Curie temperature.: 钽钪酸铅陶瓷具有优良的介电、压电和铁电性能，但烧成温度高、居里点较低。

20. At present, research must stress on the development of new technology for the low cost production of scandium-bearing master alloy and the industrial application of aluminum-scandium alloys.: 目前的研究重点是开发含钪中间合金的低成本生产新技术及含钪铝合金的工业应用。

21. The phosphorus content of phytin was determined in molybdate-antimony-scandium color agent after it was digested by concentrated sulfuric acid and perchlorate, with its deviation of no over 5%.: 浓硫酸和高氯酸消解后，用钼-锑-钪复合显色剂测定植酸钙中的磷含量，偏差不超过5%；

22. The phosphorus content of phytin was determined in molybdate-antimony-scandium color agent after it was digested by concentrated sulfuric acid and perchlorate, with its deviation of no over 5%.: 浓硫酸和高氯酸消解后，用钼-锑-钪复合显色剂测定植酸钙中的磷含量，偏差不超过5%；

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