“超声波”的概念、定义、翻译、参考文献-科学参考

单词	超声波
释义	超声波 Encyclopedia 理学声波释 ultrasonic wave超声波频率超过人耳可听闻频率（即在2万赫以上）的声波。又称超声。 Physics 光学、声学声学 ultrasonic wave超声波频率高于20kHz的声波。＞声学＞声学基础理论＞释义 ultrasound, ultrasonics超声 supersonic wave超声波^† ultrasound wave超声波^† UW=ultrasonic wave超声波 Astronomy ultrasonic wave超声波
随便看	service element service engineering support tools and platforms service exemption tax service facilities service flowchart service function model service gate of hydropower station service gateway service granularity service housing/sheltered housing service incident standard service innovation and design service institutions for the disabled service interoperability service invention-creation service level service level agreement service level agreement, SLA service level objective service life service mains service management service management layer service manager serviceman cadres retirement system

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。