The separating out rate of radon was figured by the content of radium in the samples of construction material,through the mensuration of natural radioactivity and by measuring the density of radon that is released by the samples through ZnS sparking method.
通过天然γ能谱测量方法测定建材样品中的镭含量,计算理论上衰变产生的氡密度,以及用硫化锌闪烁法测定由样品释放到空气中的氡密度的方法来计算氡的射气系数。
The speciality of mill effluent containing uranium,radium and nitrogen is described in this paper.
叙述了含铀、镭以及氮素废水的特殊性 ;给出了“从天然铀工艺含氮素废水中回收肥料的放射性毒物限量标准”;阐述了从高浓度 NH4NO3溶液中除去微量 U、Ra及其子体的可行方法 ;并制备出 U、Ra及总 α活度均低于限量标准的 NH4NO3肥
Because of her research on radioactivity,especially on radium,madame Curie made foundation of atomic physics,radioactive chemistry and radioactive medical.
居里夫人关于放射性元素,特别是镭的发现与研究为原子物理学、放射化学和放射医学的发展奠定了基础,为此她先后获得了诺贝尔物理学奖和诺贝尔化学奖。
At one end of the barrel there was some radium.
枪管的一端装有镭。
Madame Curie discovered the element radium.
居里夫人发现了镭元素。
He was the discoverer of the element radium.
他是镭元素的发现者。
Radium is a chemical element.
镭是一种化学元素。
estimated actual radium analyzer
估计真实镭含量分析仪
Radium and uranium are radioactive elements.
镭和铀是放射性元素.
Radioactivity is a special quality of radium.
放射性是镭的一种特性。
You could not safely hold a handful of radium atoms, for radium can cause serious burns.
手里若拿着一把镭原子，不可能安然无恙，因为镭会引起严重烧伤。
All London was agog to see the two "parents" of radium.
伦敦全城都渴望见到这两位镭的“父母”。
Who is the scientist firstly find radium?
首先发现镭的科学家是谁？
the discovery of radium has revealed a great force which is already healing disease and will one day drive machinery;
镭的发现揭露了如今已用来治
Who is the scientist that first discover Radium?
最先发现镭的科学家是谁？
the radiotoxic effects of radium on bone.
镭对骨骼的放射性毒性作用
Madame Curie is well known for her discovery of radium.
居里夫人因为发现镭而著名。
Madame Curie is well known as the discoverer of radium.
居里夫人作为镭的发现者而著名。
ESI Electronic Equipment (Shanghai) Co., Ltd.
镭富电子设备（上海）有限公司
Analytical determination of radium-226 in water
GB/T11214-1989水中镭-226的分析测定
Tell me when radium was found.
告诉我镭是什么时候被发现的。