Educational inspection is one of the important parts in educational management and it has played a displaceable role in japanese educational development 摘要教育督导是教育管理的重要组成部分，教育督导在日本教育发展过程中发挥了不可替代的作用。
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Laboratories at university are playing more and more important and displaceable role in producing professional personnel with creative ability and practical skill 摘要高校实验室在培养具有创新精神和实践能力的高素质专门人才方面，正越来越发挥著重要的和不可替代的作用。
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The analysis and review of the present situation of the advances in the modification of uhmwpe , which is used as the displaceable material for artificial joint , are made in this paper , and some points on the developing tendency of the research are also put forword 摘要对目前国内外有关人工关节置换材料超高摩尔质量聚乙烯改性研究的现状进行了分析和综述，并对未来研究中应注意的问题提出了一些看法。
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And the main contents of this dissertation are : ( 1 ) the engineering geological features of discontinuities in surrounding rock mass were analyzed on the basis of field geological survey and the preferred orientation of the main discontinuities were derived . then the displaceable blocks distributing on the roof and sidewalls of main chamber were searched out taking the intersecting relationship of discontinuities into consideration . then the failure mode and the coefficient of stability of the displaceable blocks were studied respectively 主要内容包括：在野外地质调查基础上，通过统计分析得到地下厂区结构面的优势方位；对结构面工程地质特性进行了分析；根据结构面的空间组合关系，搜索出可能在主厂房洞室的顶拱和边墙部位出露的块体，并分析了各块体的可能滑移方式及其稳定性系数。
