“中国三北防护林建设工程”的概念、定义、翻译、参考文献-科学参考

单词	中国三北防护林建设工程
释义	中国三北防护林建设工程 Encyclopedia 理学中国三北防护林建设工程释 shelter-forest project in the north, northeast, and northwest China中国三北防护林建设工程在中国西北、华北、东北风沙危害和水土流失重点地区建设大型防护林的工程项目。
随便看	proper motion group proper motion in declination proper motion in right ascension proper motion member proper motion membership proper motion star proper name proper name of a function proper natural number proper nilpotent element proper node proper non-inferior solution proper nonvoid subset proper number proper open covering proper order dictionary proper orthochronous Lorentz group proper orthogonal group proper orthogonal mapping proper orthogonal matrix proper orthogonal transformation proper pair proper pairing proper part proper plane

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