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单词
active galactic nucleus, AGN
释义
active galactic nucleus, AGN
活动星系核; 活动性比一般星系核更强的星系核。其所属星系兼具下述大部或全部特征:有很明亮的核,非热连续谱,明显发射线,较大的光变,较强的高能光子发射能力等。
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marine-built terrace
marine bunker facilities
marine bureau
marine butterfly valve
marine cabin air-conditioner
marine cable
marine cable-type ocean bottom seismograph
marine calling and distress radio telephony frequency
marine calling and distress radio-telephony frequency
marine cargo handling gear
marine cargo insurance
marine cargo insurance policy
Marine Cargo Total Loss Only
marine carp in oil
marine carp in tomato sauce
marine casualty
marine casualty investigation
Marine Casualty Report
marine cave
marine celestial navigation
marine centrifugal fan
marine centrifugal separator
marine centrifugal type chiller
marine centrifugal type refrigerating compressor unit
marine centrifugal type refrigeration compressor unit
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更新时间:2025/3/14 5:53:34