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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
utility theory
utility theory for games
utility tunnel
Utility Tunnel Law
utilizable regulation
utilization and improvement of purplish soil
utilization and reclamation of lime concretion black soils
utilization coefficient
utilization coefficient of irrigation water
utilization coefficient of out driving time
utilization degree of waterflooding reserve
utilization efficiency of feed energy
utilization landfill biogas
utilization of agricultural biomass energy
utilization of agricultural biomass energy sources
utilization of agro-climatic resources
utilization of aquatic biological lipids
utilization of ash and slag
utilization of energy
utilization of FGD gypsum
utilization of fly ash
utilization of heterosis in rapeseed
utilization of heterosis or hybrid vigor
utilization of industrial waste heat in district heating
utilization of landfill gas
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