“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	oscillatory surge oscillatory twinning oscillatory wave oscillistor oscillogram oscillograph oscillographic polarography oscillograph tube oscillometric titration oscillometry oscilloscope Oscillospiraceae oscine Oscines O scope osculating circle osculating orbit osculating plane osculating sphere osculum Oseen's flow Osgood-Schlatter disease O shell Osler-Rendu-Weber disease osmate

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