“pitchstone”的概念、定义、翻译、参考文献-科学参考

单词	pitchstone
释义	pitchstone [`pich´stōn] ^GEOLOGY A type of volcanic glass distinguished by a waxy, dull, resinous, pitchy luster. Also known as fluolite.
随便看	frequency stabilization frequency standard frequency study frequency swing frequency synthesizer frequency table frequency telemetering frequency theory frequency-time-intensity frequency tolerance frequency-to-voltage converter frequency transformation frequency translation frequency translator frequency-type telemeter frequency variation fresco fresh fresh breeze fresh-core technique freshet fresh gale fresh ice fresh water fresh-water ecosystem

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