“contact bed”的概念、定义、翻译、参考文献-科学参考

单词	contact bed
释义	contact bed [`kän´takt ´bed] ^{CIVIL ENGINEERING} A bed of coarse material such as coke, used to purify sewage.
随便看	altithermal soil altitude altitude acclimatization altitude azimuth altitude-azimuth mounting altitude chamber altitude circle altitude-contour altitude curve altitude datum altitude delay altitude difference altitude hole altitude intercept altitude reservation altitude sickness altitude signal altitude tints altitude valve altitude wind tunnel altitudinal vegetation zone ALT key alto altocumulus cloud altostratus cloud

科学参考收录了103327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。