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Zheng Qingduan
释义
Zheng Qingduan
Encyclopedia
农学
〔中国兽医学家、教育家〕
释
Zheng Qingduan
郑庆端
(1902~1985-06-20)中国兽医学家。
随便看
system of particles
system of periods
system of Pfaffian equations
system of points
system of polar coordinates
system of polynomial equations
system of polynomials
System of Positive Polity
system of powers
system of production and construction corps
system of psychology
system of quadratic equations
system of quantities
system of quasigroups
system of quasi-linear hyrerbolic equations
system of quasi-linear parabolic equations
system of quasi-periods
system of rays
system of rectangular coordinates
system of reference
system of releasing environmental state report
system of representatives
system of residues
system of resultants
system of river conservancy administrations in ancient China
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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