“pitch opal”的概念、定义、翻译、参考文献-科学参考

单词	pitch opal
释义	pitch opal [`pich ´ō·pǝl] ^MINERALOGY A yellowish to brownish inferior quality of common opal displaying a luster resembling that of pitch.
随便看	oral oral arm oral cavity oral character oral contraceptive oral dependence oral disc oral erotic stage oral erotism oral groove oral personality oral phase oral primacy orange orange flower oil orange lake orange mineral orange oil orangeophile orange oxide orange peel orange-peel bucket orange sapphire orange spectrometer orange toner

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。