“sporadic E”概念、定义、翻译-科学时代

单词	sporadic E
释义	地球科学词汇手册 sporadic E 散见E层
随便看	undersubscribed category under-subscription undersubscription undersubscription under supply undersupply undersupply undersupply under suspicion underswept underswing undertaker undertaker's gain undertaker's rent undertaking undertaking undertaking undertaking undertaking undertaking undertaking expenditure undertaking expenditure undertaking expenditures undertaking for profit undertaking revenue

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

sporadic E