The steam injection pressure pipeline is in a special working environment of high temperature, high pressure and repeated steam injection for a long time. It is often unable to stop for maintenance in order to meet th...The steam injection pressure pipeline is in a special working environment of high temperature, high pressure and repeated steam injection for a long time. It is often unable to stop for maintenance in order to meet the requirements of production. As the growth of the running time, the steam pipeline risk points and weakness in further amplification, probably in strength, the material, the stress, fatigue, etc., the abnormal situation, the structure failure probability increases. It is necessary to conduct on-line inspection and comprehensive assessment of the equipment status from the aspects of safety, applicability and production to ensure that the current working condition is satisfied.展开更多
Based on the analysis of rice planting and export development in Heilongjiang Province in 2013-2021,this paper comprehensively used three export competitiveness analysis methods,namely,trade competitiveness index,reve...Based on the analysis of rice planting and export development in Heilongjiang Province in 2013-2021,this paper comprehensively used three export competitiveness analysis methods,namely,trade competitiveness index,revealed comparative advantage(RCA)analysis and international market share analysis,to compare the four major rice exporters in the world and the three major rice export provinces and cities in China.Besides,it evaluated the rice export competitiveness of Heilongjiang Province from multiple perspectives.It analyzed the reasons for low competitiveness in terms of export product structure,export market structure,production and processing technology,and brand building.Finally,it is recommended to clarify the positioning of rice export quality and take more measures to ensure product quality;improve the level of industrialization of rice production and processing,and extend the rice industry chain;develop diversified rice export markets and improve export flexibility;adhere to the principle of"opening the door and going out",expand the international popularity of high-quality brands,so as to enhance the rice export competitiveness of Heilongjiang Province.展开更多
文摘The steam injection pressure pipeline is in a special working environment of high temperature, high pressure and repeated steam injection for a long time. It is often unable to stop for maintenance in order to meet the requirements of production. As the growth of the running time, the steam pipeline risk points and weakness in further amplification, probably in strength, the material, the stress, fatigue, etc., the abnormal situation, the structure failure probability increases. It is necessary to conduct on-line inspection and comprehensive assessment of the equipment status from the aspects of safety, applicability and production to ensure that the current working condition is satisfied.
基金Social Science Planning Project of Xi an City(JG140)Bidding Project of Buchang Xixian Economic Research Institute(SMZX202113).
文摘Based on the analysis of rice planting and export development in Heilongjiang Province in 2013-2021,this paper comprehensively used three export competitiveness analysis methods,namely,trade competitiveness index,revealed comparative advantage(RCA)analysis and international market share analysis,to compare the four major rice exporters in the world and the three major rice export provinces and cities in China.Besides,it evaluated the rice export competitiveness of Heilongjiang Province from multiple perspectives.It analyzed the reasons for low competitiveness in terms of export product structure,export market structure,production and processing technology,and brand building.Finally,it is recommended to clarify the positioning of rice export quality and take more measures to ensure product quality;improve the level of industrialization of rice production and processing,and extend the rice industry chain;develop diversified rice export markets and improve export flexibility;adhere to the principle of"opening the door and going out",expand the international popularity of high-quality brands,so as to enhance the rice export competitiveness of Heilongjiang Province.
