查询词典 thorium

A method has been developed for the determination of trace thorium in soil by inductively coupled plasma mass spectrometry.

采用电感耦合等离子体质谱法对土壤中痕量的钍进行了分析。

Especially for thorium fuel lattice, such design has negative coolant void reactivitythat decreases with burnup.

特别是对于钍铀燃料栅元，这种选择能够使冷却剂空泡反应性降到负值，并且在燃耗期间不断降低。

Since 1980s, ICP-MS has been used overseas for the determination of uranium, thorium, neptunium, and plutonium in environmental samples. ICP-MS is one of the most suitable analysis techniques for the measurement of the long-lived radionuclides.

自八十年代以来，国外对ICP-MS测量环境样品中的铀、钍、镎和钚的研究表明，ICP-MS在测量长寿命放射性核素方面是最有发展前景的测量技术之一。

Marie:When the uranium and thorium are in the pitchblende,the reading is eight, but individually they only total four. Why,then, do they give out twice as much when they're in the pitchblende as they do when they're tested separately?

玛丽：当铀和钍包含在铀矿里的时候，读数是八，而分别测量后加起来只有四，那麼为什麼存在於铀矿中所产生的能量竟是单独产生能量之和的两倍？

Marie:When the uranium and thorium are in the pitchblende,the reading iseight, but individually they only total four. Why,then, do they give out twiceseparately?

玛丽：当铀和钍包含在铀矿里的时候，读数是八，而分别测量后加起来只有四，那么为什么存在于铀矿中所产生的能量竟是单独产生能量之和的两倍？

And that rare metals mining exists uranium and thorium radioactive pollution.

而稀有多金属矿的开采可能带来铀和钍等放射性污染。

In hypergensis process uranium tend to be activate and transfer while thorium tend to enrich in the relict phase.

在我们的研究中，通过计算，得到了放射性核素浓度与核素的比放射性活度之间的定量关系，进一步推算出α、β比放射性活度与核素浓度之间的定量换算公式，这对放射性环境监测具有一定的实际意义。

The effect of the ultraviolet-visible light transmittance,doping amount of thorium dioxide and neodymium sesquioxide,pH value of the aqueous solution of sodium dodecyl benzenesulfonate and some other factors on the ph.

以玻璃珠为载体，用溶胶-凝胶法制备二氧化钍和三氧化二钕复合二氧化钛膜对水溶液中的十二烷基苯磺酸钠进行了固定相光催化氧化实验。

Specific forms of waste are uranium and thorium mining and refining.

具体形式的废物，铀和钍的采矿和冶炼。

260Ruby Pendant of Fire 10x Star ruby, 10x Thorium Setting

250-260 火焰红宝石挂件（10x红宝石， 10x瑟银底座

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。