The advanced laser solid forming technology and its current application status were introduced briefly.
同时，对先进的激光立体成形技术及其应用现状做了概述。
Finally, hot topics of FEM on current application status and research in home and abroad were summarized.
最后总结了FEM的国内外应用现状及研究热点问题。
The paper introduces current application status of natural gas, quality of natural gas and speciality of natural gas engine oil in domestic.
介绍了国内天然气的应用现状、天然气质量及天然气发动机油的特殊性。
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