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Pipe diameter is one of important options of designing a long distance gas pipeline. In order to select effectively pipe diameters in designing a gas pipeline, the concept of minimum pipe diameter is presented. Based on this concept, formula of minimum pipe diameter and its simplified form are deduced. According to design throughput, design pressure, average gas temperature and gas compressibility...
Rural highway construction is the important content of building a new countryside. The rapid development of rural highways construction means that a large demand for land resources. In the analysis of the basis of the status and trends of land use for construction of rural highways, this paper summed up the characteristics and main problems in land use of construction of rural highways, according...
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