查询词典 yttrium

"Euxenite:a lustrous, blackish-brown rare-earth mineral consisting primarily of cerium, erbium, titanium, uranium, and yttrium."

黑稀金矿：一种光亮的棕黑色稀土矿石，主要由铈、铒、钛、铀和钇构成。〞粘土是由机械和化学的风化作用形成，主要是胶粒大小。

On calcination, the precursor powders were converted to crystalline yttrium gadolinium oxide at 600℃.

先驱物在600℃煅烧后可以得到立方晶型的YGO粉体。

The results show t hat yttrium exists as the form of compound (Al2Y) in AZ31 magnesium alloy, and dystectic Al2Y as the heteromorphic nucleation emerges firstly in the cou rse of alloy precipitation, which refines the alloy's microstructure and obviou sly improves the mechanical properties at room and high temperature. The average grain size of AZ31 magnesium alloy containing Y is reduced by 35.82%. Tensile s trength, yield strength and elongation percentage reach 212 MPa, 147 MPa, and 7. 5% at room temperature respectively, and 117 MPa, 98 MPa, and 10.2% at 200 ℃ re spectively.

结果表明，Y在AZ31 镁合金中主要以块状Al2Y化合物形式存在；高熔点的Al2Y在合金凝固过程中首先析出，成为凝固的异质形核剂，从而细化了合金组织，改善了室温和高温力学性能；由于Y的强化，含Y AZ31镁合金平均晶粒尺寸降低幅度约为35.82 %；室温抗拉强度、屈服强度和延伸率分别为 212 MPa， 147 MPa和7.5%，200 ℃时分别为117 MPa， 98 MPa和10.2%。

The selective extraction and separation of yttrium from heavy lanthanide by CA-100 in the presence of complexing agents were investigated.

研究了在络合试剂的存在下CA-100萃取重稀土的行为及Y同重稀土的分离情况。

The device utilizes a lutetium yttrium orthosilicate scintillator crystal, curved photomultipliers, and Philips' proprietary TruFlight technology , which uses the time difference -- in pico seconds (10-12 seconds)-- between the detection of coincident events to more accurately identify the origin of the annihilation.

飞利浦医疗系统PET/CT产品全球市场总监Jim Cavanaugh介绍说，采用Gemini TF进行全身PET扫描用时不到10分钟，此前进行同样的检查需要15分钟或更长时间，对肥胖病人同样如此；如果医生需要获得敏感性或特异性更高的PET图像，获取图像的时间还是维持在原来的水平上，这需要根据病人临床情况而决定。

Methods Effects of yttrium chloride and praseodymium chloride on human lymphocytes cultured in vitro were studied by micronucleus test.

用微核试验法研究了氯化钇和氯化镨对体外培养的人淋巴细胞微核率的影响。

Ago a kind of misconception that the rare earth metals is very scarce in nature, in fact not the case, many of which elements such as lanthanum, cerium, praseodymium, neodymium and samarium in accordance with their distribution in nature is no less well-known people in some of the elements of industry, common There ore monazite, scandium yttrium stone, silicon and cerium stone, stone and brown curtains and other fluorocarbon calcium cerium ore.

以前有种错误概念，认为稀土金属在自然界很稀少，其实不然，其中很多元素如镧、铈、镨、钕和钐按其在自然界的分布不次于人们在工业上熟知的某些元素，常见的矿石有独居石、钪钇石、硅铈石、褐帘石和氟碳钙铈矿等。

Monazite, rutile, phosphorus and yttrium ore, tantalum and niobium ore, zircon, ilmenite and exploitation of the reserves volume ranks first in the country, Yunfu pyrite is China's largest reserves of pyrite in the sulfur content of the highest in a large-scale mine.

独居石、金红石、磷钇矿、钽铌矿、锆英石、钛铁矿的储藏量和开采量均居全国首位，云浮硫铁矿是中国硫铁矿中储量最多、含硫量最高的一座大型矿山。

Rare-earth element lies in sixth period among periodic table of chemical element and includes the 15 elements of lanthanides and elements scandium and yttrium.

稀土元素在化学元索周期表中，为第六周期，属于镧系族及钪、钇共17种元索的总称。

It suggests that rare-earth elements yttrium and praseodymium have certain genotoxicity.

提示稀土元素钇和镨具有一定的遗传毒性。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。