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本科论文AbstractCasting in the production process with a certain degree of danger,the use of continuouscasting raw materials and their machinery and equipment often have some dange...

本科论文AbstractIn recent years,LNG energy has been used more and more widely in our country,andLNG is also developing at a high speed.The construction of CNG and LNG comprehensive...

本科论文AbstractAre the resources available for human use on the earth really inexhaustible?How manyresources can we exploit?It seems that using cheap resources,large quantity base...

本科论文AbstractIn recent years,there are more and more places of entertainment in our country.Moreand more people go to KTV every day.It is indeed economic progress and people's l...

本科论文AbstractUnder the circumstance of advocating environmental protection in today's world,gas-powered cars have gradually become the means of transportation for many families,...

本科论文AbstractSteel industry has been Chinese pillar industry and occupies an extremely importantposition in daily life to military industry for a long time.Inevitably accompanie...

本科论文AbstractIn this society where communication is more and more frequent,the transport of peopleand goods becomes more and more important,therefore the port carriers are parti...

本科论文AbstractUnder the background of economic globalization,China's economy keeps stable growthand ranks in the forefront of the world.However,with the rapid development of econ...

本科论文AbstractWith the development of urban traffic,more and more people choose the subway totravel,and people gradually begin to pay attention to the safety of the subway.Most o...