“生物需氧量”的概念、定义、翻译、参考文献-科学参考

单词	生物需氧量
释义	生物需氧量 Encyclopedia 工学废水水质指标释 biochemical oxygen demand；BOD生物需氧量在特定条件下，水中的有机物和无机物进行生物氧化时所消耗溶解氧的质量浓度。又称生化需氧量。以毫克/升或百分率、百万分之一（ppm）表示。
随便看	second contact second control second cosine formula second cosine theorem second cosmic velocity second countability axiom second countable space second countable topological space second Cousin problem Second creation second critical magnetic field second cultivated machinery second curvature second demographic transition second derivative second derivative test second derivative test discriminant second development second difference second differential second differential parameter second differentiator second distance second dual second dual module

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。