“environmental problems”的概念、定义、翻译、参考文献-科学参考

单词	environmental problems
释义	environmental problems Encyclopedia 工学〔基础词条〕释 environmental problems环境问题由于人类活动作用于周围环境所引起的环境质量和自然资源的变化，以及这种变化对人类的生产、生活和健康造成的影响。
随便看	positive emitter-coupled logic, PECL positive endomorphism positive energy positive-energy representation positive energy states positive energy theorem positive energy wave positive entropy positive excess coefficient positive existential sentence positive extension positive eyepiece positive feedback positive feedback amplifier positive film positive flower structure positive formula positive function positive functional positive fundamental sequence positive glow positive Grassmannian positive half-trajectory positive helicity spinors positive Hermitian kernel

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。