The composition region showing superconductivity above liquid nitrogen temperature has been found.
摸清了该系统中在液氮温区呈现超导电性的材料组成范围。
The design flood region composition is an important subject of hydroelectric project planning and design.
设计洪水地区组成是水利水电工程规划设计中的一个重要研究课题。
This paper studies composition and characters of the aphid fauna of Hengduan Mountains Region.
研究了横断山区蚜虫区系的组成和特点。
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