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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。
- Based on Fermat Theory,this paper sets up the differential equation of the ray track in the atmosphere,and explains the mirage phenomenon. 利用费马原理建立了大气中光线轨迹的微分方程 ,并解释了“空中绿洲”这一光学现象。
- Based on the atmospheric transmission model, through the actual ray track, the zenith angle is revised, which is a complicated function with launch angle and altitude. 摘要基于大气传输模型，采用光线传输的实际轨迹对天顶角进行修正处理，得出天顶角随发射角和传输高度的变化复杂函数。
- 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。
- automatic following track apparatus 自动跟踪径迹装置
- 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。
- Numerical Solution of the Ray Equation and the Ray Track 光线方程的数值解与光线追迹
- 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。
- 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。
- A display device that uses a cathode ray tube. 一种使用阴极射线管的显示装置。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- 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。
- The Study of Engender Mechanism of Submarine Ray Track and Detectability 潜艇光尾流产生机理及其探测技术研究
- There are some electrical apparatus in the room. 房间里有些电器。
- Radioactive ray is material thing. 放射线是实际的物质。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
