http://bkds.ustb.edu.cn/ Journal of University of Science and Technology Beijing ( Social Sciences Edition) en 1008-2689 http://bkds.ustb.edu.cn/article/id/c3ff4115-37d4-4463-9849-85ffe3c03f8b Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 1-5,36. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/c3ff4115-37d4-4463-9849-85ffe3c03f8b 1 http://bkds.ustb.edu.cn/article/id/15d528c4-a324-42f6-afeb-f47598bf4e86 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 6-10. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/15d528c4-a324-42f6-afeb-f47598bf4e86 6 http://bkds.ustb.edu.cn/article/id/676f6804-156d-45bf-86bf-ba6641b45c90 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 11-17. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/676f6804-156d-45bf-86bf-ba6641b45c90 11 http://bkds.ustb.edu.cn/article/id/f073867e-dac1-40f2-822c-754fcfab81ef Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 18-20. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/f073867e-dac1-40f2-822c-754fcfab81ef 18 http://bkds.ustb.edu.cn/article/id/e97b384b-6933-42eb-858b-fa7907b00649 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 21-25. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/e97b384b-6933-42eb-858b-fa7907b00649 21 http://bkds.ustb.edu.cn/article/id/8f859a30-5003-4772-a5ed-4280099d38b0 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 26-32. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/8f859a30-5003-4772-a5ed-4280099d38b0 26 http://bkds.ustb.edu.cn/article/id/bd2cf1a0-776d-4492-be2c-9561e3d4eabe Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 33-36. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/bd2cf1a0-776d-4492-be2c-9561e3d4eabe 33 http://bkds.ustb.edu.cn/article/id/2022ab0c-2f09-4fb3-a467-bb514b8f58d6 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 37-40. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/2022ab0c-2f09-4fb3-a467-bb514b8f58d6 37 http://bkds.ustb.edu.cn/article/id/0e695313-1ef0-43e0-97b3-8be28c186a74 Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 41-44. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/0e695313-1ef0-43e0-97b3-8be28c186a74 41 http://bkds.ustb.edu.cn/article/id/ff5b757d-9354-4589-937c-d6ac1fab245f Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 45-48. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/ff5b757d-9354-4589-937c-d6ac1fab245f 45 http://bkds.ustb.edu.cn/article/id/fb250b22-fec5-46c2-8d00-2492d26b844f Personal use 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http://bkds.ustb.edu.cn/article/id/3f900d40-31bb-4dae-b2b7-acf74e4cecfe 61 http://bkds.ustb.edu.cn/article/id/c246e72d-abcb-4cd1-a276-a9f18d4d18bd Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 64-72. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/c246e72d-abcb-4cd1-a276-a9f18d4d18bd 64 http://bkds.ustb.edu.cn/article/id/2b501422-f0cc-4b57-a6a0-a29412cb505c Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 73-77. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/2b501422-f0cc-4b57-a6a0-a29412cb505c 73 http://bkds.ustb.edu.cn/article/id/1f16c9e0-d443-4048-9eca-ce9d89921e3e Personal use only, all commercial or other reuse prohibited ljj雷竞技下载学报社科版. 2002 18(4): 78-79. article doi: ljj雷竞技下载学报社科版 18 4 http://bkds.ustb.edu.cn/article/id/1f16c9e0-d443-4048-9eca-ce9d89921e3e 78 http://bkds.ustb.edu.cn/article/id/63e147c1-86bd-42b3-bfdd-f2a848f0b71a Personal use only, all commercial 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