“measures for preserving city walls”的概念、定义、翻译、参考文献-科学参考

单词	measures for preserving city walls
释义	measures for preserving city walls Encyclopedia 工学〔近代﹞释 measures for preserving city walls《保护城垣办法》民国时期国民政府制定的中国近代第一部城墙保护办法。
随便看	normal cone normal conformal connection normal congruence normal congruence of lines normal connection normal consolidation normal contact manifold normal continued fraction normal contour normal convergence normal coordinate normal coordinates normal coordinate system normal correction of magnetic field normal correlation normal count approach normal covering normal crossing normal cross-section normal current normal curvature normal curvature vector normal curve normal cycle normal density function

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。