Radium can be used to treat cancer.镭可以用来治疗癌症.Radon is the daughter of radium.氡是镭的子体.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....
Radium can be used to treat cancer.镭可以用来治疗癌症.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.He was the discoverer of the element radium.他是镭元素的发现者.Radon is the daughter of radium.氡是镭的子体....
The optimum design method of involute internal gear slotting cutter is introduced.介绍了渐开线直齿内齿轮插齿刀的优化设计方法.The involute progression of hallucination is strange.幻觉的复杂的发展过程很奇特.This paper introduces calculation and measurement...
总的来说，当今的老年人依然相对贫困。As a group, today's old people are still relatively deprived.每年我们都有慈善日来筹款帮助贫困人群。Every year we have charity days to raise money for unfortunate people.贫困、文盲与高出生率密切相关。Poverty and illiteracy go togeth...