“letter of patent”概念、定义、翻译-科学时代

单词	letter of patent
释义	环境科学与工程词汇手册 letter of patent 专利证书；特许证书
随便看	image structure image subtraction image support image surface curvature image survey image symbol set image symmetry image synchronization image synthesis image template image theory image training image transducer image transducer image transform image transformation image transformation image tube image tube image tube camera image understanding image utility image value image vericon image working distance

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。