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蟹状星云
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蟹状星云
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蟹状星云
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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
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reversible electrode
reversible film
reversible gel
reversible heat engine
reversible inactivation
reversible Invert Emulsion Drilling Fluid
reversible knot
reversible lane
reversible level
reversible Markov process
reversible material ropeway
reversible measure
reversible mill
reversible mirror
reversible modification
reversible mounting
reversible oxidation
reversible pendulum
reversible permeability
reversible plow
reversible polarographic wave
reversible prime
reversible process
reversible reaction
reversible relation
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