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- alpha ray counter α射线计数管
- 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。
- There was an enormous cat crouching on the counter. 柜台上蜷伏着一只硕大的猫。
- Radioactive ray is material thing. 放射线是实际的物质。
- 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。
- He placed the money on the counter. 他把钱放在柜台上。
- A ray flower or the corolla of a ray flower. 舌状花舌状花或这种花的花冠
- Can the goods be refunded at your counter? 你们柜台的商品可以退吗？
- We should not act counter to our promise. 我们不应违背自己的诺言。
- A ray of sunlight pierced the clouds. 一缕阳光穿透了云层。
