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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 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 time variation of the cosmic ray flux is one of crucial problems in the field of cosmic ray physics, solar geophysics and astrophysics, etc. 宇宙线强度随时间的变化、时间变化的起源和与天体物理因素的联系是宇宙线物理、地球物理和天体物理学科中最复杂的问题之一,具有重要的物理意义。
composition of primary cosmic ray 一次宇宙线的组成
The structure of the BES main drift chamber and arrangement of cosmic ray tests have been described briefly. The main test results of the chamber performance have been given. 简要描述了北京谱仪(BES)主漂移室的结构和宇宙线实验安排;给出利用宇宙线测试主漂移室性能的主要结果.
That's an instrument sent on helium balloons to measure the composition and energy spectra of cosmic rays from 35 kilometers above Antarctica. 该仪器被放在南极35千米以上的氦气球中;用来测量宇宙射线的能谱和组成成分.
The chemical composition of primary cosmic rays in the energy region aro-und 10~(14) eV is studied by using Monte-Carlo simulation. 并通过Monte-Carlo模拟计算,探讨了10~(14)eV附近能区的初级宇宙线成份。
The periodic analysis for the data of cosmic ray flux after meteorological effect inspection shows that solar time semi-diurnal, 0.996 and 1.002 diurnal variations exit in the data of TeV and lOTeV cosmic ray. 对气象效应修正后的宇宙线流强数据进行周期分析，发现TeV和10TeV宇宙线数据中存在半日、0.;996和1
The sidereal diurnal variation (T=0.997d) for lOTeV cosmic ray has been detected with about signal-noise ratio 5.0, with amplitude 0.125 + 0.079% and phase 0.45(llh) by analyzing the data of cosmic ray flux after meteorological effect corrected. 通过对气象效应修正后的宇宙线流强数据进行周期分析，发现了10TeV宇宙线流强的恒星日(T== 0.;997日)变化，其信噪比为5
Cosmic ray spallation is a form of naturally occurring nuclear fission and nucleosynthesis.It refers to the formation of elements from the impact of cosmic rays on an object. 宇宙射线散裂是自然发生的一种核分裂和核合成形式，它经由宇宙射线撞击物质产生新的元素。
PROGRESS IN RESEARCH OF COSMIC RAY ASTROPHYSICS 宇宙线天体物理研究进展
The composition of the report took two months. 写这份报告花了两个月时间。
acceleration mechanism of cosmic ray 宇宙线加速机构
diurnal variation of cosmic ray flux 宇宙线通量周日变化
Due to the shielding effect of the atmosphere, intensity of cosmic rays increases with altitude. 由于大气层有阻挡宇宙射线的作用,离地面越高,宇宙射线的强度就越强。
fermi theory of cosmic ray acceleration 费米宇宙射线加速理论
After chemical assay, we have known the composition of the ore. 经过化学分析，我们知道了矿石的构成。
origin and propagation of cosmic ray 宇宙线的起源和传播
Charge composition of primary cosmic rays 初级宇宙线电荷成分
Fertilizers modify the composition of herbage. 肥料可改变牧草的组成。