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[期刊论文] 作者：T.F.HOU ,C.C.SUN,
来源：地理学报 年份：1934
1. The different geological formations and their ecouomie sigmficances. (a)Alluvium (b)Loess (c)Red beds (d)Upper coal series and Sandstone formations (e)Lower...
[期刊论文] 作者：S.D.Yao C.Sun S.Q.Zhou C.C.Sun,
来源：金属学报：英文版 年份：2002
By implanting B+ and O+ ions respectively into polycarbonate (PC) plates, the sur-face mechanical properties of PC have been improved. Measurement by Nano Inden...
[期刊论文] 作者：S.D.YAO,C.Sun,S.Q.Zhou,C.C.Sun,
来源：金属学报 年份：2004
By implanting B+ and O+ ions respectively into polycarbonate (PC) plates, the sur-face mechanical properties of PC have been improved. Measurement by Nano Inden...
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