“pearlstone”的概念、定义、翻译、参考文献-科学参考

科学参考收录了1248194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。

单词	pearlstone
释义	pearlstone 珍珠岩
随便看	sound ranging instrument sound ranging location sound ranging observation post sound ranging platoon sound ranging plotting board sound ranging section sound-ranging station sound-ranging technique sound ray sound-ray diagram sound ray trace sound ray tracking plotter sound reading sound receiving room (隔声测量时受声的房间) sound reception sound recognition sound recorder sound recording sound-recording apparatus sound recording film sound reduction factor sound reduction index sound reduction index (SRI) sound reflection sound reflection board