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[期刊论文] 作者：Chengyong Du,
来源：中国科学:数学英文版 年份：2019
It was proved by Fan and Lee(2016) and Fan(2017) that the absolute Gromov-Witten invariants of two projective bundles P(Vi)→ X are identified canonically when...
[期刊论文] 作者：Chengyong DU,Tiyao LI,
来源：数学年刊B辑（英文版） 年份：2020
Comparing to the construction of stringy cohomology ring of equivariant stable almost complex manifolds and its relation with the Chen-Ruan cohomology ring of t...
[期刊论文] 作者：Ma Chengyong,Du Zeyu,Li Yuntao,
来源：中国焊接 年份：2004
This paper summarizes the application status of computer technology in welding materials field from three aspects: the CAD of welding materials, the date base s...
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