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The time jetter of the cosmic ray detecting system is 79.5 ps. 宇宙线测量系统的时间晃动为 79.;5ps
cosmic ray isotope 宇宙线同位素
Eight equations computed isotopic abundance and two equations computed isotopic abundance ratio have been given. 给出八个计算丰度公式和两个计算同位素比公式。
The isotopic abundance ratio and content are determined with isotopic mass-spectrometry. 文章用同位素质谱法测定了辐照堆元件铀的同位素丰度比和含量。
Scientists are using cosmic ray detectors to uncover the secrets of the earliest large metropolis of the Americas. 目前，考古学家和核物理学家们正在利用宇宙射线探测器的介子束在太阳金字塔底深处进行勘测，希望能解开这座金字塔的秘密以了解扑朔迷离的狄奥提瓦康古城。
The number of cascade particles changes according to the incident cosmic ray energy, observation height, etc. 到达地面的簇射粒子数目会随不同因素而改变，包括原初宇宙射线的能量、观测高度等。
Inorganic Mass Spectrometry is preferably used each time extremely low concentrations and isotopic abundance are to be determined. 每当测定非常低的浓度和同位素丰度时总是首先使用无机质谱法，
Ordinary cosmic rays are puny things. 普通的太空射线都是微不足道的东西。
This chapter summarizes the fundamental aspects of MS, with reference to topics such as isotopic abundance and accurate mass and resolution. 关于题目，例如同位素的丰富和准确的群众和决定，这章总结MS 的基本的方面。
Sometimes, cosmic rays affect the earth. 宇宙射线有时候也会对地球产生影响。
Using Monte-Carlo method, the propagation of cosmic ray hadrons throughatmosphere is simulated. 用蒙特卡洛 (Monte-Carlo) 方法,模拟了宇宙线强子成分在大气中的传播。
The measurement method of the isotopic abundance ratios for the nanogram samarium was performed by Finnigan MAT 262-RPQ thermal ionization mass sepctrometer. 本文简介了使用Finnigan MAT 262热电离质谱仪对超微量钐天然同位素丰度比的精密测定。
Further application of pulsed laser technique to the study of high energy physics and cosmic ray physics are discussed. 最后,就脉冲激光技术在高能物理和宇宙线物理研究中的进一步应用作了讨论。
The reconstruction of shower core is one of the key works of cosmic ray experiment based on terrene. 摘要簇射芯位重建是基于地面的宇宙线观测实验的关键工作之一。
The depthmen will measure cosmic ray penetration of the sea, radioactivity,the age of the water in the abyss. 深入海底的人将在深海测量宇宙射线对海水的穿透力、放射性活动，以及海水的年龄。
Hence the properties, such as energy and incident direction, of the incident cosmic ray can be calculated according to data from stations. 因此，透过比较不同观测站的数据，可以推算原初宇宙射线的能量、入射方向等资料。
The sidereal diurnal variation for TeV cosmic ray has been detected with about signal-noise ratio 4.5, with amplitude 0.10.062% and phase 0.45(1Ih). TeV宇宙线恒星日变化的信噪比为4.;5，变化幅度约为0
Cosmic rays and X-rays produce energetic electrons by ionization. 宇宙射线和X射线因其电离作用产生高能电子。
The spectra of primary cosmic ray nuclei are fitted from experimental data under10~(14) eV and extrapolated to their bending energies. 拟合10~(14)eV以下初级宇宙线核成份能谱的实验数据,并将它们一直外推到发生拐折的能量。
The influence of the toward and away the Sun interplanetary magnetic field(IMF) to the cosmic ray shadow has been observed. 观测了朝向和远离太阳的行星际空间磁场对宇宙线阴影的影响，这是行星际磁场对阴影位移影响的第一次直接观测。