“Gum Nebula”的概念、定义、翻译、参考文献-科学参考

单词	Gum Nebula
释义	Gum Nebula [`gǝm `neb·yǝ·lǝ] ^ASTRONOMY A giant nebula about 250 parsecs (5×10¹⁵ miles or 8×10¹⁵ kilometers) in diameter, with its near edge about 300 parsecs (6×10¹⁵ miles or 9×10¹⁵ kilometers) distant, which is both an old supernova remnant and an H II region.
随便看	toroidal discharge toroidal lens toroidal magnetic circuit toroidal surface toromatic transmission torose torose load cast Torpedinidae torpedo torpedo air flask torpedo boat torpedo defense net torpedo exercise head torpedo exploder mechanism torpedo warhead extension torpor torque torque amplifier torque arm torque-coil magnetometer torque constant torque converter torque-load characteristic torquemeter torque motor

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