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On the basis of the research of mutation induced by space flight in recent years, the basic theory of mutation breeding induced by space flight and its application were discussed.
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摘要在综述了国内外近几十年来空间诱变方面的研究成果的基础上，初步论述了应用空间诱变技术进行航天育种的理论基础和实践可行性。 |
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On the basis of the research of the process and characteristic of knowledge decompose and appraisement, the paper finds Work Breakdown Structure is a appropriate method to solve problems, and offers references for knowledge management.
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摘要通过分析知识分解和知识评价的过程和特点，发掘了工作分解结构法在知识分解和知识评价中的应用，为成功实施知识管理提供参考。 |
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On the basis of the retrospect of the excavation and the research of the Erlitou site at Yanshi in Henan and the Xia Culture, this paper explores the causes of dispute between Chinese and foreign scholars on the study of early states in China, in terms of
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摘要文章通过对河南堰师二里头遗址发掘以及夏文化研究的回顾，从认知方法、考古学範例、文献的运用、推论程式和通则、个案五个方面，剖析了中外学者在中国早期国家研究中存在歧见的原因。 |
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On the basis of the rheological properties of roller compacted concrete, viscoelastic parameters for RCC dams are retrieved by selecting an appropriate viscoelastic constitutive model and considering the measured data, and the corresponding analysis progr
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摘要针对碾压混凝土的流变特性，选取合适的粘弹性本构模型，结合实测资料，进行碾压混凝土坝粘弹性参数的反演，并编制了相应的反演分析程序。 |
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On the basis of the risk assessment for each major hazard and referring to the accumulative principle, the consequence of quantitative risk evaluation describing the risk as a whole in the region could be obtained.
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主要针对有多个重大危险源存在的区域，在对单个危险源进行风险评价的基础上，应用叠加原理得到描述该区域整体风险状况的定量评价结果。 |
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On the basis of the statistics of the physical condition of the Han students aged from seven to eighteen publicized four times by the national government, the paper adopted the GM (1, 1) Model of the grey prediction theory and established the grey predict
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摘要根据国家先后4次测试公布的7~18岁城市汉族学生体质调研的原始数据，运用灰色系统理论GM(1,1)模型，建立城市青少儿生长发育的灰色预测模型，预测未来10年我国城市儿童青少年生长发育的期望值，为教育行政部门了解和掌握城市青少儿生长发育状况提供信息和参考数据。 |
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On the basis of the steady-state semi-empirical model of the tire and the concepts of the relaxation length and the effective slip ratio, a non-steady semi-empirical model to express the tire longitudinal-slip response to the low-frequency input of the tr
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摘要在稳态半经验模型的基础上，根据松弛长度和有效滑移率的概念建立了能表达时变垂直载荷及时变滑移率低频输入下的轮胎纵滑特性非稳态半经验模型。 |
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On the basis of the stress analysis of overloading asphaltum highway surface, this paper reveals the destructive mechanism of overloading of vehicles on the asphaltum highway surface, discusses the main shortcomings of semi-rigidity basic asphaltum highwa
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在对重载沥青路面应力分析的基础上，揭示了重载沥青路面的破坏机理，讨论了半刚性基层沥青路面的主要缺点，最后推荐了几种抗重载能力较强的沥青路面结构。 |
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On the basis of the study above, we put up with a reasonable suggestion about how to choose the proper regression methods for different kinds of statistical issues.
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在此基础上，对不同类型统计问题如何选用适当的回归分析方法提出了合理的建议。 |
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On the basis of the study and combining the meteorological statislics of the past 13 years (1988～2000) of the Beijing area, we submit a plan of turf irrigation for consideration to the Beijing turf management and sewage effluent irrigation office, togethe
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在此基础上，结合北京地区的有关气象资料，初步分析制定了不同降雨年型草坪污水灌溉制度，为北京市城市草坪污水灌溉管理提供参考依据。 |
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On the basis of the study on ore deposit geology, the paper discussed thedistribution of temperature field of ore body through mineral inclusion thermometry.Combining with mineralizing elements distribution condition and the zoning feature of orefabrics,
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在研究矿床地质的基础上,使用矿物包裹体测温方法,研究矿体温度场的分布,配合矿化元素的分布状态和矿石组构分带特征,推断成矿流体的喷口位置和运移方向。 |
