刘华，博士，1972年2月出生，北京航空航天大学航空科学与工程学院副教授，硕士生导师。
Hua Liu, Ph. D. She was born in 1972, and presently is an associated professor and a master student supervisor of the school of Aeronautic Science and Engineering, Beihang University.
航空航天公司洛克西德-马丁预计，该公司近一半的科学与工程专业的人员将于2019年退休，到时总共需要聘请十四万两千名工程师。
Lockheed Martin, an aerospace firm, expects nearly half its science and engineering workforce to retire by 2019 and will have to hire a total of 142,000 engineers.
空间环境探测是航天活动的一个重要组成部分，其科学与工程应用价值已经为几十年来国内外的航天活动实践所证明。
Space Environment Monitoring is one of the most important parts of Spaceflight. Its scientific and engineering value has been proved by projects of Spaceflight through these years.
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