“声周期结构”的概念、定义、翻译、参考文献-科学参考

单词	声周期结构
释义	声周期结构 Encyclopedia 理学声学超常材料释 acoustic periodic structure声周期结构介质在空间按周期分布所形成的人工复合结构，根据结构单元与工作波长的关系，通常将声周期结构分为声子晶体和声学超常材料两种。
随便看	township finance county management township finance institute township financial expenditure township financial revenue township government township industry township level comprehensive planning township-level tax collector township musical township planning township public finance township records township seat planning townships with distinct characteristics township treasury Townspeople Uprising in New Granada Townsville town-village settlements system town-village system town（rural）construction planning Towolhoe to work wonders towpath of Shanyin county tow-to-top process towveyor

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。