对部分稀土离子参与下LeuRS催化的的氨酰化反应表观稳态动力学性质进行了研究。
The apparent steady state kinetics of the aminoacylation reaction catalyzed by LeuRS at the participation of some RE 3+ was studied.
美国和其他地方都有不少的稀土矿藏。
There are extensive rare earth deposits in the United States and elsewhere.
最稀有的稀土比金子还多200多倍。
The rarest rare earth is nearly 200 times more abundant than gold.
日本也在钻研不需要稀土新的制造工艺。
Japan is also pushing for new manufacturing processes that do not require rare earths.
在日本的各个参与者都努力回收稀土和金属。
Various players have tried to recycle rare earths and metals in Japan.
稀土矿山常常也含有放射性元素，比如铀和钍。
Rare earth mines often also contain radioactive elements, such as uranium and thorium.
最新开始寻找稀土代替品的汽车制造商是丰田。
The latest carmaker to seek a rare-earth alternative is Toyota.
刚发出的这则“稀土禁令”只会加快这一趋势。
This latest rare earth ban is just going to accelerate this trend.
我从事稀土研究多年，在这个问题上有发言权。
As I had been studying rare earth for many years, I have a say over this issue.
稀土出口下了莫名其妙的一周禁止令(见文章)。
Exports of rare earths were subject to an unannounced weeklong ban (see article).
这是海底可利用的稀土元素资源量首次得到确认。
It is the first time attainable rare earth elements were confirmed on the seafloor.
今天我们将继续报道稀土金属类的稀有化学元素。
Today we continue our report on the group of chemical elements known as rare earth metals.
对未来短缺的担忧已经使稀土价格暴涨。
不过，该矿缺乏把稀土矿石加工成成品的制造资产。
But the mine lacks manufacturing assets to process the ore into finished components.
稀土是17种元素的总称，其实稀土并不稀少。
Despite their collective name, the 17 elements are not rare.
其他种类的磁铁可以用在涡轮机上，稀土金属可以循环使用。
Other types of magnets could be used in turbines, and rare earth metals could be recycled.
去年，由于经济衰退，日本企业没有从中国购买足够的稀土。
Last year, due to the economic depression Japanese companies didn't buy enough amounts of rare earths from China.
美国也有稀土矿资源，而且主要是在已关闭矿井中。
Those same rare earths are found in America, mainly in shut-in mines.
美国和澳大利亚也有稀土矿藏，但缺乏提取和冶炼的专项技术。
The U.S. and Australia have deposits of them but lack the expertise in extracting and refining the minerals.
直到今天，稀土资源出口配额大部分涵盖了至少50%的稀土合金和氧化物。
Until now, the quotas mostly covered alloys and oxides with a rare earth content of at least 50 percent.
在上世纪八九十年代，中国对稀土缺乏管理，也缺乏提炼稀土的技术。
During 1980s and 1990s, China lacks management over rare earth, nor does China has the technology to excavate rare earth.
有些公司，例如通用电气，已经开始改进技艺，以减少稀土金属的使用。
Some companies, such as General Electric, are already moving to reduce their use of rare earths.
在稀土问题上也存在冷静的思考，但是自从稀土疯弥以来，这些冷思考就一直被忽视。
Cooler heads have weighed in on rare earths, but since the frenzy began they've largely been ignored.
稀土生产商生产一公斤精炼稀土产品的成本原本为50美分，而现在增加到8美元。
What used to cost producer 50 cents per kilogram of refined product now costs $8.
稀土生产商生产一公斤精炼稀土产品的成本原本为50美分，而现在增加到8美元。
What used to cost producer 50 cents per kilogram of refined product now costs $8.
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