1.The decayed daughter of Rn released from the powder sample (soil) placed in a sealed bottle were collected on a piece of copper and the radium in the sample can be measured by counting α-particles with an Alphameter for uranium prospection, thus we call that the radium method.
用普通的铜片,收集密封于玻璃瓶中粉末(土壤)样品释放的氡的衰变子体,通过α仪测量α粒子数来测定样品中的镭,以达到找矿的目的,简称为镭法。
2.a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health.
由镭裂变生成的放射性气体元素，惰性气体中最重的一种，天然生成（尤其在花岗岩上），被认为对健康有害。
3.Radium is a radioactive element.
镭是一种放射性元素。
4.It is therefore my task to present to you radium in particular as a new chemical element, and to leave aside the description of the many radioactive phenomena which have already been described in the Nobel Lectures of H.Becquerel, P.Curie and E.Rutherford.
因此，我的任务就是将镭作为一种新的化学元素特别地介绍给你们，而不去描述许多其他的放射现象，这些现象在亨利·贝克勒尔、皮埃尔·居里和卢瑟福的诺贝尔演讲中已经有所描述。
5.The results show that effects of alkali metal salts on conductivity are different because of their different anion radium, crystal lattice energy, ionic mobility and solubility in electrolytes, that different ionic conduction modes of electrolytes result to double-peak of salt concentration dependence of conductivity and different temperature dependence, and that different influences of plasticizer to conductivity result from their different action.
结果表明,不同碱金属盐对电解质电导率的影响因其阳离子半径、晶格能、离子淌度以及在电解质中的溶解度的不同而不同;电导率的盐浓度依赖性因电解质的离子传导方式不同而明显呈现双峰形;增塑剂对电导率的影响则因其作用方式不同而产生不同的效果;电导率的温度依赖性也因电解质的离子传导方式不同而呈现不同的规律。
6.Moreover, radium remains the most useful and powerful tool in radioactivity laboratories.
而且，镭仍是放射性实验室里最有用最强大的工具。
7.We also assume that these elements undergo atomic transformations, and the most direct proof in favour of this theory is provided by the exprimental fact of the formation of the chemically-defined element helium starting from the chemically-defined element radium.
我们还假定这些元素进行原子变化。支持这一假设的最直接证据是，实验结果显示化学元素氦的形成是由化学元素铀开始的。
8.The direct extraction-photometric determination of calcium in radium lead sulfate with azo-azohydroxyl BN
偶氮-氧化偶氮BN萃取比色法直接测定硫酸铅镭中的钙
9.Near the final focus, the smallest radium of plasma shell is about 0.49 mm, and the electron density was estimated to be more than, and the averaged implosion velocity is about ;
聚焦附近，等离子体的平均电子密度约为，运动速度，最小箍缩半径0.49mm；
10.Who is the scientist that first discover Radium?
最先发现镭的科学家是谁？
