The physical model , configuration and function are introduced in this paper . in addition , molecular dynamics modeling of radiation collision cascades course in copper is carried out . some exciting results are obtained 本文介绍了它的物理模型、程序结构和功能等，并且以面心立方晶体铜为例进行了辐照碰撞级联过程的分子动力学仿真，得到了令人满意的模拟结果。
( 3 ) the analysis results of xrd , sem indicated that the ni - pd coating formed a fcc structure . after annealing at 200 ? , a little amount of pdsi was precipitated in the coating . the surface image of ni - pd coating was utricle ( 3 )利用xrd 、 sem 、 aes等手段对ni - pd合金镀层的结构、表面形貌、成分进行了分析，结果表明ni - pd合金镀层形成了面心立方的固溶体结构，镀层经过200快速退火后，有少量pd的硅化物( pdsi )析出。
The phase structure , the lattice constant , crystal grain diameter of the samples was obtained by the x - ray diffractions ( xrd ) spectra . their relations are showed respectively . influence of grain size on the lattice constant of several kind of phase structure was studied theoretically by interaction energy between atoms in nanocrystallites 其次，从结合能的角度出发，研究了nacl结构和cscl结构的离子晶体，面心立方( fcc ) 、体心立方( bcc )金属晶体以及简立方( scc ) 、面心立方( fcc ) 、体心立方( bcc )结构分子晶体的晶粒线度对晶格常数的影响。
Treatment of the spinel limn2o4 with aqueous acid produces - mno2 . x - ray diffraction and atomic absorption spectroscopy show that - mno2 with lattice constant of 0 . 806nm preserves the structural framework of the limn2o4 and the conversion of limn2o4 to - mno2 results in some contraction of the lattice 利用limn2o4与稀酸作用制得- mno2 ，经xrd 、原子吸收光谱( aas )分析表明- mno2仍然保持了尖晶石的面心立方点阵，晶胞参数0 . 806nm ； limn2o4经过酸处理、锂离子脱出后晶胞体积发生了收缩。
