“Orion arm”的概念、定义、翻译、参考文献-科学参考

单词	Orion arm
释义	Orion arm [ǝ`rī·ǝn ´ärm] ^ASTRONOMY The spiral arm of the Milky Way Galaxy that has a spur in which the sun is located. Also known as local arm.
随便看	water well water-wettable waterwheel water white water-white kerosine waterworks water year WATFIV WATS Watson equation Watson factor Watson-Sommerfeld transformation watt wattage rating watt current wattevilleite watt-hour watt-hour capacity watt-hour meter wattle gum rifle grenade rifle grenade ogive rifle range rifling rift

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