“河西四郡”的概念、定义、翻译、参考文献-科学参考

单词	河西四郡
释义	河西四郡 Encyclopedia 理学河西四郡释 Hexi Sijun河西四郡中国两汉时期设在河西走廊酒泉（今属甘肃）、张掖（今属甘肃）、敦煌（今属甘肃）、武威（今属甘肃）四郡的总称。
随便看	reduction division reduction elimination reduction factor reduction firing reduction formula reduction half reaction reduction half-reaction reduction homomorphism reduction in process reductionism reductionism methodology of psychology reduction machine reduction management of agrometeorological disasters reduction manipulation reduction matroid reduction-matting smelting reduction method reduction modulo m reduction of a complex space reduction of a fraction reduction of an elliptic curve reduction of an equation reduction of an expression reduction of an operator reduction of a problem

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。