1. It suggests that rare-earthelements yttrium and praseodymium have certain genotoxicity.
提示稀土元素钇和镨具有一定的遗传毒性。
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2. The nearside also has much more kreep-potassium, rare-earth elements, and phosphorus-according to scientists.
据科学家称，月球近地端含有更多的克里普矿物，稀有地球元素钾，还有磷。
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3. This abandoned mine in Guyun Village in China exhausted the local deposit of heavy rare-earth elements in three years.
而在中国古云镇的这一废弃稀土矿，三年就已经挖光了所有资源。
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4. It is not as though the rare-earthelements-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。
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5. Existing lasers use media ranging from crystals doped with rare-earthelements to specific mixtures of gas and even certain sorts of semiconductors.
现有的激光器使用的介质有，掺杂有稀土元素的晶体、特定比例的气体，甚至是某些特定半导体。
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6. Mineralization of copper, gold, uranium, rare-earth elements were discovered in hematite-rich breccias in the Prominent Hill prospect(South Australia) .
在南澳大利亚州布罗肯希尔地区的赤铁矿角砾岩中的勘探发现了铜、金、铀、稀土矿化。
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7. Addition of strengthening elements can further improve heat-resisting strength; while light rare-earthelements can reduce the production cost instead of Y.
加入强化元素能进一步提高合金的热强性。用轻稀土元素代替Y则能降低生产成本。
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8. The geochemical characteristics of trace and rare-earthelements are studied in conjunction with the distribution and geological characteristics of the ore deposit.
本文主要结合该矿床的分布与地质特征，研究了微量元素和稀土元素的地球化学特征。
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9. Compounds containing iron, palladium, platinum, and the rare-earthelements exhibit strong paramagnetism because they have atoms with some incomplete inner electron shells.
含有铁、钯、铂和稀土元素的化合物呈现强顺磁性，因为这些元素的原子有不完全的内电子壳层。
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10. This sediment layer is enriched in the rare metal iridium and other elements that are relatively abundant in a meteorite but very rare in the crust of Earth.
这一沉积层富含稀有金属铱，以及其他在陨石中较丰富而在地壳中十分罕见的元素。
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11. The discovery of lunar water has raised questions as to whether other resources such as helium 2 and rare Earthelements could be found on the moon as well.
月球水的发现带来了更多疑问，是否还有例如氦2和地球上的稀土元素的资源在月球上被找到。
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12. It is the first time attainable rare earthelements were confirmed on the seafloor.
这是海底可利用的稀土元素资源量首次得到确认。
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13. "The" rareearth elements "are a group of 17 naturally occurring metallic elements used in small amounts in everything from high-powered magnets to batteries and electronic circuits."
“稀土”是一种自然产生的17组金属元素，从大马力磁铁电池到电子电路都会使用。
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14. Paradoxically, mining rare earthelements- crucial for a number of green technologies - is potentially damaging for the environment.
矛盾的是，开采稀土元素会对环境造成潜在危害，但这些元素对许多绿色技术来说又是至关重要的。
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15. lunar water has raised questions as to whether other resources such as helium 2 and rare Earthelements could be found on the moon as well.
月球水的发现带来了更多疑问，是否还有例如氦2和地球上的稀土元素的资源在月球上被找到。
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16. Rare earthelements from 4 square kilometers of such areas could meet Japan's annual demand of about 30, 000 tons.
上述区域内每4平方公里范围的稀土元素储量，即可满足日本每年约30000吨的需求。
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17. Kato and the other researchers assumed those particles had absorbed rare earthelements and accumulated on the seafloor.
Kato和另一位研究者相信这些颗粒吸附了稀土元素，并使其在海底沉积。
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18. The quantity of rare earthelements buried in the Pacific Ocean is estimated to be 90 billion tons, or 800 times larger than the 110 million tons buried on land.
太平洋底蕴藏的稀土元素资源量估计达900亿吨，比其1.1亿吨的陆地蕴藏量多800多倍。
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19. China recently eased its export quotas, boosting the allowance for the first half of the year to 16,300 tonnes of rareearth elements, up by more than 8 per cent compared with the same period in 2009.
中国近期放宽了稀土出口配额，允许今年上半年出口1.63万吨稀土，比2009年同期增加逾8%。
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20. The effect of rareearth elements on the microstructure and properties of steel P20 has been investigated.
研究了P 20钢中加入微量稀土元素后性能和组织的变化规律。
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21. Rare earth elements have been widely applied in agriculture, industry, medicine and stockbreeding and so on.
稀土在我国农业、工业、医疗和畜牧业等方面有着广泛的应用。
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22. The key player in this high-stakes game is Baotou Steel rareearth (Group) Hi-tech Co., from Inner Mongolia - the world's largest producer of rareearth elements.
23. Influence of rare earthelements on high-cycle fatigue properties of AZ91D alloy was investigated and the fatigue fracture morphology was also analyzed.
研究了稀土元素对AZ 91 D压铸镁合金高周疲劳性能的影响，并对疲劳断口的组织形貌进行了分析。
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24. In the carburizing process, rare earthelements could promote the decomposition and absorption of medium and the diffusion of carbon atom.
在渗碳过程中，稀土元素对介质的分解，吸收和碳原子的扩散都起到了促进作用。
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25. In the carburizing process, rare earthelements could promote the decomposition and absorption of medium and the diffusion of carbon atom.
