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Based on the progress in rail manufacturing technology and the newest achievements in track research and design, this paper studies the selection of cut-length, quality and materials of rails for urban rail transit, and suggests that multiple factors shou
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摘要根据钢轨制造技术的发展并结合轨道研究和设计领域的最新成果，对城市轨道交通钢轨定尺长度、钢轨质量及钢轨材质选择进行分析和探讨，并建议在钢轨选型时，应全面考虑不同线路布置特点，车辆及荷载情况，运输、施工及维修条件，建设工期，初期投资及运营成本要求等综合因素，力求使每条城轨交通中的钢轨选型方案在满足安全可靠的基础上，更具工程针对性和经济适用性。 |
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Based on the project construction practice of Letan hydropower station, the paper expatiates the important significance on bringing down hydraulic power construction cost and improving investment efficiency from a few key points of project investment cont
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摘要通过对乐滩水电站工程建设实践，该文从水电站工程建设阶段工程投资控制的几个关键环节来阐述对降低水电工程造价、提高投资效益的重要意义。 |
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Based on the project of a new television tower in Guangzhou, the blind-hole method is employed in this paper to measure the longitudinal and circular residual stress in the inner and outer surface of a steel tube.
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摘要以广州新电视塔钢结构工程用大口径厚壁埋弧直缝焊管为对象，采用一种应用广泛且精度较好的检测方法－盲孔法，对厚壁直缝焊管内外表面的残余应力进行了检测。 |
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Based on the project scale argumentation of Letan hydropower station, the paper briefly introduces the main results of scheme's technical &economical comparison and the main factors of scheme option in the option and design stage of the normal storage wat
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摘要通过乐滩水电站工程规模论证，简述该工程正常蓄水位选择和装机容量选择设计阶段方案技术经济比较的主要成果、取舍方案的主要因素、以及项目建议书评估会专家组的评估意见；并根据乐滩水电站工程规模设计论证总结类似工程规模论证时的主要技术要点。 |
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Based on the propagation law of partially coherent light, spectral changes of a polychromatic Gaussian-Schell model beam propagating in free space is studied.
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摘要基于部分相干光的传输定律，研究了多色高斯－谢尔模型光束在自由空间中传输的光谱变化。 |
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Based on the properties of bisymmetric matrices, a class of constrained inverse eigenproblem and associated approximation problem for bisymmetric matrices were essentially decomposed into the same kind of subproblems for real symmetric matrices with small
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摘要根据双对称矩阵的性质，将双对称矩阵的一类约束逆特征值问题及其逼近问题分解成具有较小阶数的实对称矩阵的同类子问题，然后利用实对称矩阵的结果导出双对称矩阵的这两个问题的解。 |
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Based on the prototype observation and model test made for the periodic-flushing de-silting basin, the process and the division of the three-stage hydraulic flushing are put forward on the basis of the feature of water-sediment movement, and then the calc
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摘要依据定期冲洗式沉沙池水力冲洗的原型观测和模型试验，根据水沙运动特征，提出定期冲洗式沉沙池水力冲洗三阶段冲洗过程及划分，分别给出泄空冲洗、溯源冲洗和沿程冲洗各阶段的计算式和有关参数。 |
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Based on the prototype theory of cognitive linguistics, this article carries on the precise semantic analysis to the metaphorical senses of Chinese lai/quand Korean oda/kadain time domain, discovers that lai/quand oda/kadahave two kinds of metaphorical se
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摘要本文从认知语言学的原型理论出发，对汉语“来／去”与韩国语“(符号略)”的时间域隐喻义进行了细致的语义分析，发现两种语言的“来／去”与“(符号略)”都有两种时间域隐喻义。 |
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Based on the provided data, the doctors can monitor a large class of patients at their own home, thereby obviating the need for either party traveling and reducing the occupation of valuable beds in hospitals.
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基于这些数据，医生就可以监控很多呆在家里的病人的健康情况，免去了面诊的需要，也减少了医院宝贵病床资源的占用。 |
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Based on the pseudo rigid-body dynamics equivalent model of compliant mechanism, combining with the work done of rigid body mechanism and principle of energy conversion and instantaneous center method, an analysis was carried out on the force transmission
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摘要基于柔顺机构的伪刚体动力学等效模型，结合刚体机构的做功与能量转换原理以及瞬心法，对柔顺机构的传力效益进行了分析，推导出了柔顺机构的力传递效益与机构位置关系的表达式。 |
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Based on the psychological concept of aesthetic perception, the relationship of aesthetic perception and innovation motivity is analyzed to reach the conclusion that aesthetic perception is the motivity of innovation.
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摘要从探讨美感的心理过程出发，以达到培养学生创新能力为目的，把“美感”这一审美心理作为论证基础，从认知领域、伦理领域和情感领域三个方面入手，分析了美感和创新力之间的关系，得出美感是创新动力的结论。 |
