“middle gray areas”的概念、定义、翻译、参考文献-科学参考

单词	middle gray areas
释义	middle gray areas Encyclopedia 艺术学摄影影调释 middle gray areas灰部摄影影像中的密度浓淡深浅介于亮部和暗部之间的部分，如黑白摄影画面中的灰色部分。
随便看	proportional region proportional regulator proportional regulatory systems proportional relation proportional relations among agriculture,light industry and heavy industry proportional relations among primary industry,secondary industry and tertiary industry proportional representation proportional sampling proportional selection proportional sequence proportional stratified sampling proportional subclass number proportional trapping proportional valve proportional variable proportion by addition proportion by addition and subtraction proportion by alternation proportion by subtraction proportioner proportion of nonconforming items proportion of piped onto premises proportion of soil erosion control proportion of wind and solar power generation in electricity production proportion relationship between accumulation and consumption

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。