“snowflake obsidian”的概念、定义、翻译、参考文献-科学参考

单词	snowflake obsidian
释义	snowflake obsidian [`snō´flāk äb`sid·ē·ǝn] ^PETROLOGY An obsidian that contains white, gray, or reddish spherulites ranging in size from microscopic to a meter or more in diameter.
随便看	fractional gas-flow curve fractional horsepower motor fractional ideal fractional precipitation fractional quantum Hall effect fractional replicate fractional sampling fractional sine wave fractionating column fractionation fractionator fraction defective fraction in lowest terms fractoconformity fractography fracton fracton dimension fracture fracture cleavage fractured formation fracture dome fracture-plane inclination fracture pressure fracture strength fracture stress

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