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1·The researches are concerned with alpha rays.

这些研究是关于阿尔法射线的。

2·The most damaging radiation are gamma rays and x-rays; energetic alpha rays (streams of helium nuclei) and beta rays (electrons) can also damage cells.

最具破坏力的辐射是伽马射线和X射线；能量强大的阿尔法射线（氦核能量流）和贝塔射线（电子流）也可以破坏细胞组织。

3·So, introduction, in order to explain the results of experiments on scattering of alpha rays by matter, Professor Rutherford, and there is a footnote to the Rutherford model.

嗯，绪论，为了解释实验的结果,关于物质的alpha散射，卢瑟福说“,这儿有一个卢瑟福模型的脚注。

4·We have shown that it is possible to create a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium by bombardment with alpha rays.

我们已经展示了人工放射现象的可能性，这种放射现象的特征是用以射线轰击用咄硼和镁中的正电子或负电子。

5·These radionuclides undergo radioactive decay, by emitting harmful alpha particles, beta particles or gamma rays.

它们在衰变期间会放出对人体有害的粒子粒子或射线。