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- The researches are concerned with alpha rays. 这些研究是关于阿尔法射线的。
- The researches are concerned with alpha rays . 这些研究都是关于阿尔法射线的。
- The particles expelled when the atom explodes are protons, alpha rays or neutrons. 原子爆炸时排出的粒子是质子、a射线或中子。
- The particles expelled when the atom explodes are protons,alpha rays or neutrons. 原子爆炸时排出的粒子是质子、a射线或中子。
- 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。
- Later on, we observed that aluminium and boron, when irradiated by alpha rays do not emit protons and neutrons alone, there is also an emission of positive electrons. 后来，我们观察到，铝和硼经a射线轰击，不仅仅排出质子和中子，还排出正电子。
- Later on,we observed that aluminium and boron,when irradiated by alpha rays do not emit protons and neutrons alone,there is also an emission of positive electrons. 后来，我们观察到，铝和硼经a射线轰击，不仅仅排出质子和中子，还排出正电子。
- 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。
- But the positive electrons produced by aluminium under the action of a source of alpha rays continue to be emitted for some time after removal of the source. The number of electrons emitted decreases by half in three minutes. 但是，在射线动能源作用下铝产生的正电子在动能源撤走后的相当长时间里仍继续被排斥出来，且排出的电子数量在3分钟后减少一半。
- A display device that uses a cathode ray tube. 一种使用阴极射线管的显示装置。
- In our study of the transmutations with emission of neutrons produced in the light elements irradiated with alpha rays,we have noticed some difficulties in interpretation in the emission of neutrons by fluorine,sodium,and aluminium. 在研究排出中子的蜕变现象(这些中子产生于a射线放射出的轻量元素内部)的过程中，我们注意到，在解释由氟。钠和铝产生的中子排出现象中还有一些难点。
- In our study of the transmutations with emission of neutrons produced in the light elements irradiated with alpha rays, we have noticed some difficulties in interpretation in the emission of neutrons by fluorine, sodium, and aluminium. 在研究排出中子的蜕变现象(这些中子产生于a射线放射出的轻量元素内部)的过程中，我们注意到，在解释由氟。钠和铝产生的中子排出现象中还有一些难点。
- Radioactive ray is material thing. 放射线是实际的物质。
- A ray flower or the corolla of a ray flower. 舌状花舌状花或这种花的花冠
- A ray of sunlight pierced the clouds. 一缕阳光穿透了云层。
- I was left without a ray of hope. 我连一线希望也没有了。
- Her visit brought a ray of sunshine into the children's lives. 她的来访给孩子们的生活带来了欢乐。
- Ray take a gulp of coffee and rushed out of the room. 雷喝了一大口咖啡，接着便冲出了房间。
- He focused the sun's ray on a piece of paper with a burning-glass. 他用一面凸透镜把阳光在纸上聚成焦点。
- gamma ray dosimeter γ射线剂量计
