The heavy metals in the atmosphere mainly come from the gas and dust which involved by the energy costs,transport,metallurgy and building materials production.Other than the element of Hg,the heavy metals come into th...The heavy metals in the atmosphere mainly come from the gas and dust which involved by the energy costs,transport,metallurgy and building materials production.Other than the element of Hg,the heavy metals come into the atmosphere in the form of aerosol basically and go into the soil through natural precipitation and rain.展开更多
With the continuous growth of the scale of China's foreign direct investment, more and more domestic enterprises begin to choose "going out", which not only expands the international influence of the ent...With the continuous growth of the scale of China's foreign direct investment, more and more domestic enterprises begin to choose "going out", which not only expands the international influence of the enterprises themselves, but also makes an important contribution to China's economic development. With the implementation of the national "go globally" strategy, industrial gas enterprises can also expand their market. Different from inward investment, outward investment has its special complexity and uncertainty, so it is very important to explore its influencing factors. However, the external investment of industrial gas is influenced by both the external environment and the risks of gas supply customers. In this paper, the influence of the uncertainty of the main external factors on the foreign direct investment of gas enterprises is briefly described.展开更多
The aim of the work was the study of the effect of NEMP （nanosecond electromagnetic pulses） on steel properties. Steel treatment was performed under the workshop conditions. The mechanical properties and the microst...The aim of the work was the study of the effect of NEMP （nanosecond electromagnetic pulses） on steel properties. Steel treatment was performed under the workshop conditions. The mechanical properties and the microstructure of the experimental samples and samples prepared by usual way were analyzed. The treatment of metal melt with nanosecond electromagnetic pulses at the crystallization stage makes it possible to change mechanical properties of metal and its structure.展开更多
文摘The heavy metals in the atmosphere mainly come from the gas and dust which involved by the energy costs,transport,metallurgy and building materials production.Other than the element of Hg,the heavy metals come into the atmosphere in the form of aerosol basically and go into the soil through natural precipitation and rain.
文摘With the continuous growth of the scale of China's foreign direct investment, more and more domestic enterprises begin to choose "going out", which not only expands the international influence of the enterprises themselves, but also makes an important contribution to China's economic development. With the implementation of the national "go globally" strategy, industrial gas enterprises can also expand their market. Different from inward investment, outward investment has its special complexity and uncertainty, so it is very important to explore its influencing factors. However, the external investment of industrial gas is influenced by both the external environment and the risks of gas supply customers. In this paper, the influence of the uncertainty of the main external factors on the foreign direct investment of gas enterprises is briefly described.
文摘The aim of the work was the study of the effect of NEMP （nanosecond electromagnetic pulses） on steel properties. Steel treatment was performed under the workshop conditions. The mechanical properties and the microstructure of the experimental samples and samples prepared by usual way were analyzed. The treatment of metal melt with nanosecond electromagnetic pulses at the crystallization stage makes it possible to change mechanical properties of metal and its structure.
