“mustard-seed coal”的概念、定义、翻译、参考文献-科学参考

单词	mustard-seed coal
释义	mustard-seed coal [`mǝs·tǝrd´sēd ´kōl] ^GEOLOGY Anthracite that will pass through circular holes in a screen which measure 3/64 inch (1.2 millimeter) in diameter.
随便看	resonance radiation resonance reaction resonance scattering resonance spectrum resonance structure resonance transformer resonance trough resonance vibration resonant antenna resonant capacitor resonant cavity resonant-cavity maser resonant chamber resonant-chamber switch resonant circuit resonant coupling resonant detector resonant diaphragm resonant element resonant frequency resonant gate transistor resonant helix resonant iris resonant jet resonant line

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