“urban noise prevention planning”的概念、定义、翻译、参考文献-科学参考

单词	urban noise prevention planning
释义	urban noise prevention planning Encyclopedia 工学城市防噪声规划释 urban noise prevention planning城市防噪声规划在设计新城市和改造旧城市中，从防止噪声干扰的要求出发而进行的城市建设的全面规划和合理布局。
随便看	positive quadratic form positive quantity positive ray function positive real axis positive real control positive real function positive real number positive real part positive real system positive recurrent point positive recurrent state positive reinforcement positive relation positive result positive root positive root system positive rotation positive school of criminology positive selection positive self-adjoint operator positive self-regard positive semi-definite positive semi-definite form positive semi definite Hermitian matrix positive semi-definite Hermitian matrix

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。