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蟹状星云
释义
蟹状星云
Encyclopedia
理学
蟹状星云
释
Crab Nebula
蟹状星云
金牛座的一团无定形的膨胀气体云。星表中的编号为M1和NGC1952。标准历元J2000为赤经05h34m31.94s,赤纬+22°00′52.2″。角径为7′×4′,视亮度相当于9等星。
Astronomy
Crab Nebula
蟹状星云
随便看
nutation ellipse
nutation in longitude
nutation in obliquity
nutation in right ascension
nutation measurement quantity
nutation of inclination
nutation of longitude
nutation period
nutgrass
nutgrass galingale rhizome
nuthatches
nutlet
nutmeg
nutmeg family
nu-torque spinning
nu-torque spinning yarn
nutricline
nutrient
nutrient absorption in aquatic animals
nutrient acquisition strategy
nutrient agronomic efficiency
nutrient antagonism
nutrient assimilation
nutrient balance
nutrient bioavailability of aquatic organisms
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