uranium

[juə'reiniəm]

n. 铀

例句与用法：

A coarse-grained granite, sometimes rich in rare elements such as uranium, tungsten, and tantalum.

花岗伟晶岩一种有时富含铀、钨和钽等稀有元素的粗纹理花岗岩

A green radioactive mineral that is a hydrous crystalline phosphate of uranium and copper.

铜铀云母一种绿色的放射性矿物，为铀和铜的氢化结晶云母

Radium and uranium are radioactive elements.

镭和铀是放射性元素。

词形变化：

简写符号: U |

n.

【化】铀[U]

uranium

词形变化：

简写符号: U |

uranium[ju'reiniəm]n.1.■【化学】铀

1. [mass noun]the chemical element of atomic number 92, a grey dense radioactive metal used as a fuel in nuclear reactors(Symbol: U)
   铀(（符号：U）)
   
2. Uranium is a chemically reactive metal belonging to the actinide series. Becquerel discovered radioactivity in uranium in 1896, and its capacity to undergo fission led to its use as a source of energy, though the fissile isotope, uranium-235, has to be separated from the more common uranium-238 before it can be used in nuclear weapons. The atom bomb exploded over Hiroshima in 1945 contained uranium-235
   

1. late 18th cent.: modern Latin, from Uranus: compare with tellurium
   

uranium

名词 uranium:

a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

同义词：U, atomic number 92

uranium

■In 1945, all mankind came to know and fear the nucleus when the fission of 1 kg of uranium devastated Hiroshima.

1945年，当1公斤的铀裂变使广岛成为废墟时，全人类开始知道原子核并对它产生了恐惧。

■Exxon Corporation of New York City announced plans in September 1978 to test laser enrichment of uranium in late 1980.

1978年9月纽约市埃克森公司报道，计划在1980年底进行激光浓缩铀的试验。

■Uranium Bilgisayar - - Yeni ve 2.

el bilgisayar sat谋艧谋.

■INTERNEXCO GMBH deals in Uranium hexafluoride, Uranium conversion as well as in Uranium concentrate.

INTERNEXCO GMBH 是一家现代化的、靠的产品供应商，这家供应商从事铀转换、变换,铀浓缩物的制造、售。请您访问我们的主页，垂询当前的产品系列和服务。

■At Scinto 6 uranium occurs in much altered dolerite below the unconformity.

“辛托6”的铀矿体产于不整合面之下变质甚深的粒玄岩中。

■A writer has found a small deposit of manganese ore and rock specimens flecked with uranium or stained green by copper.

一名作家还发现了一个不大的锰矿堆积体和一些粘染有铀痕迹或者带着铜绿斑痕的矿石标本。

■One pound of uranium carries more releasable energy than 1, 500 tons of coal.

一磅铀所含的释放能量要比一千五百吨的煤还多。

■A metal called uranium gave off a kind of radiation.

一种叫铀的金属会发出一种射线。

■A metal called uranium gave off a kind of radiation, which Marie Curie later called radioactivity.

一种叫铀的金属发出一种射线，后来玛丽·居里把这种现象称为放射性。

■One of the methods to set free the energy locked in such substances as uranium is known as nuclear fission.

一种把储存在象铀这样的物质里面的能量释放出来的方法被称为核裂变。

■China has never exported sensitive technologies such as those for uranium enrichment, reprocessing and heavy water production.

中国从未出口过铀浓缩、后处理和重水生产等敏感技术。

■Highly enriched uranium can be produced in China.

中国现今能生产高富集铀。

■Neutron activation or chemical analysis for uranium are used as a follow-up .

中子活化分析和化学分析铀可作为进一步追索的方法。

■The escape of neutrons occurs at the exterior of the uranium(or plutonium)material.

中子的逸漏发生于铀（或钚）块的外表面。

■The chain reaction caused by the uranium nuclei is explained in the critical experiment.

临界实验解释了由中子引起铀核的链式反应。

■To make the fissile material, he needs to develop an ability to enrich uranium.

为了得到分裂物质，他需要发展浓缩铀的能力。

■The establishment of uranium supplies for the future must depend to an increasing extent.

为了满足今后对铀矿资源的需求，必须扩大普查规模。

■It is generally accepted that a chain reaction may be obtained in uranium which would yield enormous amounts of energy.

人们普遍认为，铀可以引起连锁反应，产生巨大的能量。

■The only local coarse-grained sand-stones in the uppermost part are important for uranium.

仅最上面局部的粗粒砂岩对铀是有利的。

■They went over nationwide in search of uranium mines.

他们为了探寻铀矿走遍了全国。

■They reported the abnormal uranium content of waters issuing from tuffaceous rocks.

他们发现，从凝灰岩中流出的水中铀含量反常。

■They worked in diamond and uranium mines.

他们在钻石和铀矿场工作过。

■They have converted yellowcake into uranium hexafluoride gas.

他们已经把“黄饼”转化为六氟化铀气体。

■The tests would be sufficiently "sensitive and accurate"to uncover even "tiny traces"of uranium, he said.

他说,这个检查非常"灵敏准确",它能检测出"非常微量的"铀。

■The tests would be sufficiently "sensitive and accurate" to uncover even "tiny traces" of uranium, he said.

他说，这个检查非常“灵敏准确”，它能检测出“非常微量的”铀。

■Sub critical breeder fuelling actinide series and driven by D-T fusion neutrons can use uranium source effectively.

以锕系元素为燃料的次临界增殖反应堆，在D－T聚变中子源驱动下，可以更有效地利用有限的铀资源；

■Iran has become even noisier about its desire to go on enriching uranium.

伊拉克甚至闹着渴望要继续他们的铀浓缩。

■IRAN carries on enriching uranium regardless at its nuclear plant at Natanz.

伊朗不顾后果地在位于纳坦兹的核工厂进行铀浓缩活动。

■Iran agreed to suspend enrichment of uranium in its nuclear program at least until the end of July.

伊朗同意延缓在核武器中的铀的添加量至少到7月底。

■Iran would accept an IAEA verifiable cap on enrichment limit of reactor grade uranium.

伊朗愿意接受国际原子能机构就反应堆所使用的铀浓度的上限。

■Iran says it is still studying a UN-drafted deal to ship its uranium to Russia.

伊朗称他们仍在对关于他们向俄罗斯运输铀的联合国草案进行研究。

■Iran continues to defy the Security Council's instructions to stop enriching uranium.

伊朗继续拒绝联合国安理会要求伊朗停止铀浓缩活动的决议。

■Iran says that Uranium enrichment is for peaceful perpose to provide fuel for nuclear power.

伊朗认为他们的铀提炼计划用于和平的目的－为核电站提供燃料而已。

■Iran says its uranium enrichment is for peaceful purposes to provide fuel for nuclear power.

伊朗说他的铀浓缩是为和平利用核能提供原料。

■Iran says it is fiddling with uranium and plutonium to produce more electricity.

伊朗轻描淡写的说利用铀和钚可以更多发电。

■Iran has revealed it has a second uranium enrichment plan.

伊朗透露已拥有第二个铀浓缩计划。

■But Iran continues to enrich uranium for civilian use.

但伊朗继续浓缩铀用于民用。

■Russia is again urging Iran to stop uranium enrichment to end the international standoff over its nuclear program.

俄罗斯再次敦促伊朗停止提炼浓缩铀，以结束国际间在伊朗核计划问题上出现的僵持局面。

■In the case of uranium the sample location or medium is not as critical.

分析铀时对取样点位置或介质的要求就不那么严格了。

■Primary chemical differentiation accounts for the prepondence of uranium.

初步的化学分异使铀富集。

■Th has been produced via a multinucleon transfer reaction by 60MeV/u 18 O ions bombardment of natural uranium.

利用 6 0MeV/u的18O离子束轰击天然铀靶 ,通过多核子转移反应生成重丰中子核素2 37Th ,由多步快速放射化学分离方法从被照射过的靶物质中分离出钍元素。

■Dead oil in a semi-oxidized state seems capable of effecting the direct precipitation of uranium from solute.

半氧化状态的重油似乎可能影响铀从溶液中的直接沉淀析出。

■Radiogenic heat, even from a fairly deep-seated uranium orebody, could be measured.

即使铀矿体埋得足够深，它的放射成因热也能被测出。

■Argument against a hydrothermal origin is the sympathetic distribution of uranium and gold.

反对热液成固的理由是铀和金有着一致的分布。

■The objection to the placer origin have centred around the softness of uranium compounds.

反对砂矿成因的论据主要是：铀的化合物不耐磨蚀。

■Unearthing more uranium is expensive and time-consuming.

发掘更多的铀矿成本昂贵而且耗费时间。

■On behalf of the A.E.A., the uranium reconnaissance in the U.K. was undertaken.

受原子能管理局的委托，在英国开展了铀矿普查工作。

■Another mystery is the isotopic composition of xenon found in minerals from the Oklo uranium deposit in Gabon, Africa.

另一个令人费解的问题就是在非洲加蓬的奥克洛铀矿床的矿物中所发现的氙同位素组成。

■However, the actual weight of uranium or plutonium in such a weapon is greater than this amount.

可是，在一枚那样的核武器中，铀或钚的实际重量要比这个数字大得多。

■A combinatin of sources of uranium may be the most realistic postulate.

各种铀来源的综合考虑可能是最现实的假说。