“user class of service”概念、定义、翻译-科学时代

单词	user class of service
释义	图书馆、情报与文献学词汇手册 user class of service 用户服务级别
随便看	diaphragm propellant tank diaphragm pump diaphragm regulator diaphragm setting lever diaphragm shutter diaphragm-spot diaphragm type compressor diaphragm type pressure gauge diaphragm valve diaphragm valve diaphragm valve diaphysectomy diaphysis diaphysis diaphysitis diapir diapir diapiric feature diaplacental infection diapositive diapositive diapositive diapositive emulsion diapositive film diapyesis

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。