“Sinian Period”概念、定义、翻译-科学时代

单词	Sinian Period
释义	地质学词汇手册 Sinian Period 震旦纪
随便看	pulse position modulation pulse position modulation (PPM) pulse power pulse power supply pulse pressure pulse pyrolysis pulser pulser pulse radar pulse radar pulse radar pulse radiation source pulse radiolysis pulse radiolysis method pulse rate pulse-rate multiplication pulse rebalance pulse receiver pulse recurrence frequency pulse reflection pulse-registering device pulse relay pulse repetition frequency pulse repetition frequency pulse repetition frequency (PRF)

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。