“saltpeter cave”的概念、定义、翻译、参考文献-科学参考

单词	saltpeter cave
释义	saltpeter cave [sȯlt`pēd·ǝr ´kāv] ^GEOLOGY A cave in which there are deposits of saltpeter earth.
随便看	field engineer field-enhanced emission field excitation field flattener field focus field fortification field-free emission current field frequency field galaxy field geology field gradient field gun field index field intensity field investigation field ionization field-ion microscope field laboratory field length field lens field-line annihilation field-line reconnection field luminance field magnet field map

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