“等级”的概念、定义、翻译、参考文献-科学参考

单词	等级
释义	等级 Physics gradation①层次 ②分级 ③等级 grade①等级 ②坡度 Mathematics grade分次，等级 rank秩，阶，等级 tier层，等级
随便看	shifting cultivation shifting dunes control at Ningxia Shapotou Section of the Baotou-Lanzhou Railway Shifting (Funds) shifting method shifting operator shifting sand shifting sandy land shifting theorem shift instruction shift invariant discrete time system shift-invariant operator shift left shift network shift of the graduation shift of the origin shift operation shift operator shift-out shift parameter shift property shift reagent shift-reduce algorithm shift-reduce algorithms shift-reduce conflict shift register

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。