The coal resource exists at the northwest area in china , but the most consumption of the coal is in the east and south of china , so that , the basic flow of coal transportation is from west to east , from north to south and through the combine of the traffic railway and coastal shipping 由于煤炭产地多为西北部地区，而煤炭的消费地主要集中在煤炭资源缺乏的华东及中南地区，因而形成了我国西煤东运、北煤南运、铁海联运的基本运输格局。
The company is mainly engaged in the research , devlopment and production of cmc welding material series including weldingwire , welding rod , welding compound , the main prlducts include co2 gas - shielded welding wire , submerged arc welding wire , weathering resistant steel welding wire , coredelectrode , copper & copper alloy welding rod , cast iron welding rod , buttering welding rod , copper base brazing alloy , phosphorus copper brazing alloy , welding flux 430 and welding flux 431 series , 68 kinds and over 100 standards . the company is one of the largest welding material production enterprises in central south china 公司产要产品有： co2气体保护焊丝、埋弧焊丝、耐侯钢焊丝、不锈钢焊丝、铜及铜合金焊丝、铝及铝合金焊丝、结构钢焊条、不锈钢焊条、铸铁焊条、堆焊焊条、铜基钎料、磷铜钎料、焊剂430 、焊剂431等，拥有四大系列六十八个品种一百多种规格焊接材料，是中南地区目前品种规格最全的焊接材料制造企业之一。
The second chapter introduced the natural condition , the social humanities environment and the housing culture characteristic in the south - middle region of hunan province , it analysis and elaborate systemicly aimed at the planar configuration , the spatial modality , the structure system and climate compatibility processing of folk residence in south - middle hunan province 第二章介绍了湘中南地区的自然条件、社会人文环境和居住文化特征,并重点针对湘中南民居的平面布局、空间形态、结构体系和气候适应性处理做了系统的分析和阐述。
Abstract : based on the indoor test results of the base bedding course materials for cement concrete pavement and prevalent actural calculation approach of the prevalent norms , and according to the different compositions in changtan expressway and in consideration of the experiences gained in the central and southern region , a typical structure legend for cement concrete pavement which is suitable for areas damp and with plenty of rainfall the typical structure and guideline for the use of the typical structure legend are presented in this paper 文摘:通过对南方多雨地区目前常用的水泥混凝土路面基垫层材料的室内试验，依据现行规范的结构计算方法，进行不同结构组合验算与长潭高速公路试验路段现场检测，并参考中南地区使用经验，提出了适应多雨潮湿地区水泥混凝土路面典型结构图例，论述了运用典型结构图例的原则及指南。
Wuhan yuancheng chemical manufactory , located in the beautiful shouyi innovating biology & chemical district , is a high technology chemical company , which is engaged both in producing fine chemical , pharmaceutical & its intermediates and flavoring & essence and in distributing the products of our own company and affiliated enterprises 武汉远城科技发展有限公司位于风景秀丽的首义创新生化工业园区，是中南地区大型的专业从事精细化工、香精香料、食品添加剂、医药原料及中间体等产品的研究、开发、生产、经营、销售于一体的高科技化工企业。
