1.
Either of two decay products of thorium, mesothorium I, an isotope of radium, or mesothorium II, an isotope of actinium.
新钍钍的两种放射性生成物之一，即新钍1号，它是镭的同位素，或新钍2号，它是锕的同位素
2.
Other radioactive elements have been discovered since: actinium, radiothorium and mesothorium, ionium, etc.
自那以后发现的其他放射性元素有：锄、放射性钍和新针、镍，等等。
3.
The Latest Investigation and Assessment on Thorium Lung Burden of the Thorium-containing Dust Exposed Miners of the Bayan Obo Rare-earth Iron Mine;
白云鄂博稀土铁共生矿矿工肺内钍活度调查与评价的最新结果
4.
protactinium-231-thorium-230 dating
镤-231钍-230测年法
5.
A radioactive isotope of thorium with mass number228.
射钍钍的放射性同位，质量数为
6.
fertile thorium 232.
能产生裂变物质的钍232
7.
thorium uranium deuterium zero power reactor
重水零功率钍 铀反应堆
8.
advanced epithermal thorium reactor
改进型超热钍反应堆
9.
thorium lead age
钍 铅法测得的年龄
10.
thorium fuelled candu
坎杜型含钍燃料反应堆
11.
Determination of thorium in uranium ore concentrate by thorin photometric method
GB/T11848.11-1989铀矿石浓缩物中钍的测定钍试剂光度法
12.
Methods for chemical analysis of thorium nitrate--Determination of thorium content
GB/T16478.2-1996硝酸钍化学分析方法钍量的测定
13.
Determination of thorium dioxide in thorium-tungsten alloys--Weight method
GB/T3312-1982钨钍合金中二氧化钍的测定重量法
14.
Thorium ore, uranium ore, or mixed ore of uranium and thorium In which the rate of content weight uranium and thorium is higher than five-ten thousandths.
一钍矿物、铀矿物或铀钍混合之矿物，其含有铀、钍之成份重量比在万分之五以上者。
15.
a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite.
一种放射性矿物，由硅酸钍组成，是钍的来源，见于粗糙的花岗岩中。
16.
Marie found another called thorium.
玛丽发现了另一种物质，叫钍。
17.
Analytical method of thorium in water
GB/T11224-1989水中钍的分析方法
18.
Show that if P is a prime then ??is deficient.
证明：如果P是素数，则?钍强魇?。