radium中文什么意思

n.
【化学】镭。 radium emanation 镭(放)射气，氡(＝radon)。

• radium a:    镭a
• eka radium:    类镭
• hydraulic radium:    水力半径

例句与用法

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1. At one end of the barrel there was some radium .
   枪管的一端装有镭。
2. 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”。
3. Radium can be fixed some distance from its original source .
   镭在离它的原始母体一定距离上固定下来。
4. The other element, which caused the stronger radiation, was given the name radium .
   另一种发射更强射线的元素定名为镭。
5. The radium isotopes are absorbed to an appreciable extent through the human and animal gut .
   镭的同位素通过人和动物的肠子时有很大部分被吸收。

英文释义

名词

1. an intensely radioactive metallic element that occurs in minute amounts in uranium ores
   同义词：Ra, atomic number 88

百科释义

Radium is a chemical element with symbol?Ra and atomic number?88. Radium is an almost pure-white alkaline earth metal, but it readily oxidizes on exposure to air, becoming black in color.