“at-grade”概念、定义、翻译-科学时代

单词	at-grade
释义	数学词汇手册 at-grade 在同一水平面上的
随便看	pack ice pack in double acceptors packing packing packing packing packing packing packing packing packing packing a jury packing and labeling regulation packing and labelling regulation packing and presentation packing box packing box assembly packing case packing charge packing charge packing cost packing credit packing credit packing credit packing density

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。