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- Aluminium can be transformed,by the capture of an alpha particle and the emission of a proton,into a stable silicon atom. 鋁可以通過(guò)俘獲取粒子、排出質(zhì)子而被蛻變成一種穩定的硅原子。
- Aluminium can be transformed, by the capture of an alpha particle and the emission of a proton, into a stable silicon atom. 鋁可以通過(guò)俘獲。 粒子、排出質(zhì)子而被蛻變成一種穩定的硅原子。
- measurement of gross alpha activity in non-saline water (thick source method) 在不含鹽的水中總嶧疃炔飭: 厚源法
- The nature of the nuclear transformation could be firmly established: the aluminium atom,for example,captures the alpha particle and is transformed,after expelling the proton,into an atom of silicon. 核蛻變的性質(zhì)因此得到確立。例如，鋁原子俘獲。粒子，并在排出質(zhì)子后蛻變成硅原子。
- Method: Phenylalanine was absorbed with particle activated carbon. 方法:采用顆?；钚蕴课奖奖彼?。
- The nature of the nuclear transformation could be firmly established: the aluminium atom, for example, captures the alpha particle and is transformed, after expelling the proton, into an atom of silicon. 核蛻變的性質(zhì)因此得到確立。 例如，鋁原子俘獲。 粒子，并在排出質(zhì)子后蛻變成硅原子。
- alpha particle ionization detector α粒子電離檢測器
- When we breathe in radon, the alpha particles emitted in the decay process will cause damage to our lung tissue. 氡氣在衰變過(guò)程中會(huì )放出粒子,當我們吸入氡氣時(shí),我們的肺部便會(huì )受粒子影響。
- Alpha particles are positively charged helium nuclei obtained from natural radioactive decay. 粒子是從天然放射性蛻變得到的帶正電的氦核。
- The goods are to be sold by the gross. 這些貨物是要躉批出售的。
- Millions of alpha particles went straight through the nitrogen gas without touching any of its atoms. But now and then there came a direct hit on a nitrogen nucleus, which split it. 成百上千萬(wàn)的粒子沒(méi)有碰到氮原子就穿過(guò)了充滿(mǎn)氮氣的試管，但時(shí)不時(shí)的總有一些粒子會(huì )擊中并分裂氮原子。
- Over 25 isotopes of Polonium are known, with atomic masses ranging from 192 to 218. Polonium-210, the predominant isotope of polonium, is radioactive and emits alpha particles on decay. 現時(shí)已知道釙元素有25個(gè)同位素,它們的質(zhì)量數由192至218,釙210是當中顯著(zhù)的一個(gè)同位素,具放射性特徵,會(huì )釋出放射性阿爾法粒子。
- Using Charged Particle Activation Analysis (CPAA), the concentration of oxygen in a thin boron target was determined, and the method of analyzing the thin unknown sample in comparison with the thick standard was studied. 應用帶電粒子活化分析法(CPAA)對硼薄膜中的氧含量進(jìn)行了測量,并對利用厚標樣分析薄樣品中的元素含量的比較測量方法進(jìn)行了研究。
- He made a gross mistake but refused to admit it. 他犯了嚴重的錯誤卻不肯承認。
- He regretted very much having said something gross. 他講了一些粗話(huà),對此非常後悔。
- The gross for the year was $60,000. 年總收入為六萬(wàn)美元。
- The researches are concerned with alpha rays. 這些研究是關(guān)于阿爾法射線(xiàn)的。
- The office has been humming with activity. 辦公室一直忙著(zhù)搞活動(dòng)。
- There wasn't a particle of truth in what he said. 他說(shuō)的沒(méi)有一點(diǎn)真話(huà)。
- The threat of war has depressed business activity. 戰爭的威脅使經(jīng)濟蕭條。
