“petrochemicals”的概念、定义、翻译、参考文献-科学参考

单词	petrochemicals
释义	petrochemicals Encyclopedia 工学有机原料释 petrochemicals石油化学品以石油或天然气为原料制成的化学工业产品。
随便看	normal net normal number normal ogive model normaloid normaloid matrix normaloid operator normal operator normal order normal ordering normal orthogonal basis normal partitioning normal p-complement normal pedal curve normal phase normal phase high performance liquid chromatography normal place normal plane normal point normal polygon normal polynomial normal population normal positive cone normal pressure/atmospheric concentration equipment normal probability distribution normal probability paper

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。