释义 |
uranium
/juˈreɪniəm//juˈreɪniəm/
词组 | 习惯用语
uranium enrichment 铀浓缩 enriched uranium [核]浓缩铀 depleted uranium 贫铀;贫化铀 highly enriched uranium 高浓缩铀
英语例句库
- Australia has major coal, gas, and uranium reserves.
澳大利亚的煤、天然气和铀的储量很多。 - They went over nationwide in search of uranium mines.
他们为了探寻铀矿走遍了全国。 - 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。 - Objective To investigate more effective substances or their combination for depleted uranium (DU) decorporation.
目的比较常见的几种贫铀促排剂,寻找高效低毒的药物或组合方案。 - Lightering rely on the port, the output of cocoa, timber, uranium ore, and other selected.
港口依靠驳运,输出可可、木材、精选铀矿等。 - Absorption velocity increases with initial pressure, and keeps constant at different initial composition of uranium deuteride.
增加混合气体的初始压力有利于铀吸氘速率的增加,氘化铀的初始氘量不影响铀的吸氘速率。 - "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." - Several passive biosorption mechanisms of uranium such as complexation,redox,microprecipitation and ion exchange are discussed,and the trend of development is forecasted.
探讨了微生物对铀的被动吸附机理,论述了其表面配合、氧化还原、无机微沉淀及离子交换等过程,并进行了展望。 - This article discusses and summarizes uraniferous characteristics of paleochannel depositional systems based on depositional characteristics of fluvial systems and geochemical behaviour of uranium.
本文通过对各类河流沉积特点的研究,结合铀的地球化学行为,探讨河流沉积体系的赋铀性。 - Mineral exploration made important progress in .coal, uranium, iron, gold, silver, copper, nickel, zinc, lead, antimony, tungsten, molybdenum, vanadium, kainite and characteristic non-metal.
矿产勘查在煤、铀、铁、金、银、铜、镍、铅、锌、锑、钨、钼、钒、钾盐及特色非金属矿产等方面取得重要进展。 - Rossing uranium mine is the only operating uranium mine in the world where the uranium occurs in intrusive alaskite.
罗辛铀矿山是目前世界上惟一尚在运营中的侵入体白岗岩型铀矿。 - By using the approach of morphostructure and tectonic chronology analysis, neotectonic activity evidences and characteristics as well as its ralation to uranium mineralization were researched.
通过构造地貌和构造年代学的分析方法,对其表现特徵和运动特徵及其与铀成矿之间的关系进行研究。 - Generation of uranium was closely related to migration and escaping of natural gas and may be also relevant to hydrothermal solution activities during epigenesis period.
铀的形成主要与天然气的运移和逸散有关,也可能与后生阶段的热液活动有关。 - There was another example, and that was the famous case of the alleged contract between Iraq and Niger for the import of yellowcake, uranium oxide.
存在这样一个例子,就是那个著名的被宣称的伊拉克和尼泊尔间的冲突,因为“黄饼”-铀氧化物-的进口。 - But an unexpected fact was noted: certain minerals( pitchblende, chalcolite, autunite) had a greater activity than might be expected on the basis of their uranium or thorium content.
但是一个意外的事实引起了我的注意:某些矿物质(青铀矿物质、铀云母或钙铀云母)活性比根据其铀或针含量所判断的要高。 - A tax advantage is also available to holders of most depletive assets—those which are used up, or depleted, over a period of time—like oil, natural gas, uranium, or coal.
那些折耗性资产的持有者也享有纳税优惠,如石油、天然气、铀或煤这类会在一定期间里被耗竭的资产,被称为折耗性资产。
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原声例句
世界史 Crash Course Oh, Stan is this yellow cake uranium? 哦, Stan是这个黄饼铀? NPR音讯 2015年7月合集 They can have highly enriched uranium, meaning weapons grade. 伊朗可以拥有等同于武器级别的高浓缩铀。 生活大爆炸 第8季 Tell her about the uranium! Tell her about the uranium. 告诉她铀的事!快告诉她铀的事。 奥巴马每周电视讲话 It shuts down Iran’s path to a bomb using enriched uranium. 断绝了伊朗使用浓缩铀生产核武器的途径。 BBC 听力 2019年11月合集 Iran says it will resume enriching uranium at an underground site south of Tehran. 伊朗表示,将在德黑兰以南的一个地下设施恢复浓缩铀活动。 生活大爆炸 第7季 Which, sadly, he couldn't build because Santa wouldn't bring him enriched uranium. 可惜的是,他失败了,因为圣诞老人没得带给他所需的浓缩铀。 NPR音讯 2014年9月合集 Its stockpile of 20% enrich uranium and its stockpile of 5% enrich uranium is being reduced. 伊朗已经减少了20%浓缩铀和5%浓缩铀的储备。 抢救切尔诺贝利 These pieces of graphite enveloped uranium rods. 这些石墨里面包覆着铀棒。 CRI在线 2021年7月合集 The president has rarely spoken about weapons-grade enrichment of uranium. 总统很少谈及武器级铀浓缩。 BBC 听力 2013年6月合集 He also said Tehran would not suspend uranium enrichment activities. 他还说,德黑兰不会停止铀浓缩活动。
中文百科
铀
铀(Uranium)是一种银白色金属化学元素,属于元素周期表中的锕系,化学符号为U,原子序为92。每个铀原子有92个质子和92个电子,其中6个为价电子。铀具微放射性,其同位素都不稳定,并以铀-238(146个中子)和铀-235(143个中子)最为常见。铀在天然放射性核素中原子量第二高,仅次于钚。其密度比铅高出大约70%,比金和钨低。天然的泥土、岩石和水中含有百万分之一至百万分之十左右的铀。采矿工业从沥青铀矿等矿物中提取出铀元素。 自然界中的铀以三种同位素的形式存在:铀-238(99.2739至99.2752%)、铀-235(0.7198至0.7202%)、和微量的铀-234(0.0050至0.0059%)。铀在衰变的时候释放出α粒子。铀-238的半衰期为44.7亿年,铀-235的则为7.04亿年,因此它们被用于估算地球的年龄。
英语百科
Uranium 铀
Uranium is a chemical element with symbol U and atomic number 92. It is a silvery-white metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all its isotopes are unstable (with half-lives of the six naturally known isotopes, uranium-233 to uranium-238, varying between 69 years and 4.5 billion years). The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99%) and uranium-235 (which has 143 neutrons). Uranium has the second highest atomic weight of the primordially occurring elements, lighter only than plutonium. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. It occurs naturally in low concentrations of a few parts per million in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite.
近义、反义、联想词
近义词n. metallic element, metal 联想词plutonium钚;radioactive放射性的;nuclear原子能的;isotopes核素;radioactivity放射;coal煤;ore矿石;manganese锰;mineral矿物;tungsten钨;minerals矿物质;
英英词典
uranium n.- a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
synonymous: U, atomic number 92
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