“超声波测井”的概念、定义、翻译、参考文献-科学参考

单词	超声波测井
释义	超声波测井 Encyclopedia 理学声波测井释 ultrasonic logging超声波测井采用超声波频段（＞20千赫）的脉冲弹性波在井下进行的超声脉冲回波测量技术。
随便看	positive Hermitian kernel positive Hermitian operator positive homogeneous function positive hull positive image positive index of inertia positive infinity positive integer positive integral kernel positive interaction between nutrients positive ion positive ion, cation positive ion mode positive kernel positive kurtosis positive leap second positive lens Positive likelihood ratio positive limit point positive limit set positive linear functional positive linear operator positive link positive literal positive logic

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。