“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	Kroll process Kronecker delta Kronecker product Kronig-Penney model Krukenberg's tumor krummholz Krupp ball mill Kruskal coordinates Kruskal diagram kryolithionite kryptoclimate kryptoclimatology krypton krypton-86 krypton lamp KSAM K scan K scope K selection K shell k-space KSR K star kt K theory

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