“envelopment”概念、定义、翻译-科学时代

单词	envelopment
释义	军事词汇手册 envelopment （美国）包围
随便看	pulse duration pulse duration pulse duration modulation pulse duration modulation pulse duty factor pulse echo pulse echo method pulse echo technique pulse electrolysis pulse energy pulse excitation pulse excitation pulse feeling and palpation pulse firing pulse fission chamber pulse flip angle pulse form-columniation type pusher conveyor pulse-forming amplifier pulse frequency pulse frequency pulse frequency pulse frequency pulse frequency modulation pulse frequency modulation control system pulse frequency spectrum

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。