“河阳三城”的概念、定义、翻译、参考文献-科学参考

单词	河阳三城
释义	河阳三城 Encyclopedia 理学河阳三城释 Three Forts of Heyang河阳三城中国北魏、东魏时筑于黄河孟津两岸和河中洲上的三城。
随便看	pencil pencil beam pencil-beam antenna pencil beam survey pencil-beam survey pencil buoy method Pencil Drawing pencil-family pencil in cup appearance pencil interactive pencil of circles pencil of coaxal circles pencil of complexes pencil of confocal conics pencil of conicoids pencil of conics pencil of curves pencil of hyperplanes pencil of lines pencil of matrices pencil of operators pencil of parallel lines pencil of pencils pencil of planes pencil of quadrics

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。