This standard stipulated the catalogue and coding， defect description， causes of defects，means of detectioand methods should be takeof various rail defects. This standard applies to the statistics of rail defects， Cause of defect and defect informatiotreatment. This standard doesn't apply to the following defects： a)The rail parts made from cutting and forging rails，such as switch rails(point rails，wing rails) ，guardrail，expansiojoint rails，etc.; b)Driving accidents caused by the non-rail defects or rails caused by the disaster; c)The few special rails made from the special experiment materials or with special cross sectioout of this standard.

正交异性钢桥面具有结构自重轻、施工快捷方便、承载能力大等优点，在外桥梁工程中得到广泛应用。钢桥面系通常由正交异性钢桥面板与沥青混凝土铺装层组成。在运营中，钢桥面系容易出现以下两种典型的病害问题：①正交异性钢桥面板疲劳开裂；②沥青混凝土铺装层使用寿命偏短，易出现开裂、车辙、壅包等病害，须频繁维护。这些病害问题在桥梁中普遍存在，影响了桥梁结构的耐久性和行车舒适性，并增加了钢桥面的维护成本。 为了解决钢桥面系的上述难题，《广东省交通运输行业地方标准（GDJTGT A01-2015）：超高性能轻型组合桥面结构技术规程》编制单位借鉴国际上有关超高性能混凝土的研究成果，通过大量的科学研究及实桥试验，提出了超高性能轻型组合桥面结构，该结构由正交异性钢桥面板与超高韧性混凝土组合而成，具有局部刚度大、耐久性能好

《水环境质量与污染物排放标准汇编（第2版）》共汇集了截至2017年5月底我国正式发布实施且现行有效的水环境质量和污染物排放方面的标准和地方标准共计97项，其中标准68项，地方标准29项。68项标准涉及我国水环境质量标准、工业污染物排放标准、特定环境下的水质量标准等诸多方面。29项备案的水污染物排放地方标准涉及北京、上海、天津、山东等15个省、市、自治区。本版汇编与上一版相比，新增标准8项，删减作废标准5项。

This Standard is piled with a view to guiding the constructioand quality acceptance of railway natural disaster and foreigobject intrusiomonitoring system （hereafter referred to as "disaster monitoring system"） and unifying relevant technical requirements. This Standard is applicable for the constructioand quality acceptance of the disaster monitoring system of railways to be constructed or reconstructed. The constructioand acceptance of the disaster monitoring system shall conform to relevant national and industry technical standards. The constructioshall be performed othe basis of desigdocuments， and the constructioquality shall meet the requirements of system functionality， safety and quality features specified ithis Standard. Standardized management concerning system construction， staffing9 site management and process controlling shall be strengthened during constructioof the disaster monitoring system. During constructioof the disaster monitoring system， proper constru

中国目前工程塑料的产量较低，大部分需要进口，这对中国工程塑料的开发和生产提出了严峻的挑战。加速工程塑料的发展，是从事工程塑料研制、生产、成型加工等人员所面临的重要任务。正是基于这种考虑，我们参照外有关资料并结合自己的工作实践，编写了这本手册，以期能对中国工程塑料的发展作些微薄的贡献。 全书共分三篇，即篇总论，第二篇通用工程塑料和第三篇特种工程塑料。篇介绍了工程塑料的发展简史、技术开发动向、性能特点及测试方法、成型加工和应用领域等；第二篇介绍ABS类树脂、聚酰胺、聚碳酸酯类树脂、聚甲醛和改性聚甲醛、聚苯醚和改性聚苯醚、热塑性聚酯，以及超高分子量聚乙烯等通用工程塑料品种；第三篇介绍聚砜类树脂、聚酰亚胺、聚苯硫醚和改性聚苯硫醚、聚芳酯和改性聚芳酯、聚苯酯和改性聚苯酯、聚芳醚酮、液晶

This Specification was prepared based on Document TJS [2010] No. 241-TechnicaI Guide for Construction of High-speed Railway Track as per the requirements for establishing the engineering and construction standard system of CHINA RAILWAY，by summarizing the practical experience in high-speed railway projects that had been put into operation in earlier stage and the experience with CRTSIII slab track for Zhengzhou-Xuzhou High-speed Railway，Panjin-Yingkou High-speed Railway and Shenyang-Dandong High-speed Railway，absorbing the research results on CRTsrri slab track and extensively soliciting the opinions from different parties involved in construction and operationThis Specification prises 20 chapters， namely General Provisions， Terms， Basic Requirements， Construction Preparations， Setting-out of Construction Control Network，Construction of Ballastless Track Bed for CRTS I Slab Track，Construction of Ballastless Track Bed for CRTS II Slab Track， Construction of Ballastless Track Bed for CR

The guide is developed to unify technical requirements for the constructioof greecorridor for railways，for the purpose of stabilizing slopes，conserving water and soil，improving environment，preventing disasters and landscaping. The guide is applicable to the design，construction，quality inspectioand acceptance of greecorridor for new railway project and railway reconstructioproject.

随着计算机辅助设计技术的不断发展，三维实体设计因为交互性强、操作性好、精度高、易于修改、便于交流等优点，已经广泛的应用与各个领域。为了提高公众对三维实体设计的认识，推动计算机辅助设计技术在社会和中小学基础教育领域的进展，培养学生的设计思维、动手能力和创新精神，我们编写了《3D One三维实体设计》。这本书适合三维设计的初学者、学生、教师、创客、DIY爱好者等使用。