“water quality grade”的概念、定义、翻译、参考文献-科学参考

单词	water quality grade
释义	water quality grade Encyclopedia 工学水环境质量释 water quality grade水质等级依据不同水域环境的功能和保护目标，按照功能高低依次划分的等级。又称水质级别。
随便看	Yan Cheng Yancheng Yancheng Gang Yancheng Nanyang International Airport Yancheng Qu Yancheng Science and Technology Museum Yancheng Shi Yancheng Site Yanchep National Park Yanchi Coup Yanchi Xian Yanchuanian Stage Yanchuan Xian Yan Chuntang Yan Ciping Yancong Yan Dafan Yandang Mountains Yandang Shan Yandang Shanmai Yan Deyue Yandian Kiln Site Museum at Fengfeng Cizhou Kiln) Yan Dichang Yandi Garden in Baoji City Yan Dingxian

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。