Mira variable
The making of useful or decorative items from brass.
(astronomy) Any of a class of pulsating variable stars characterized by very red colours, pulsation periods longer than 100 days, and amplitudes greater than one magnitude in infrared and 2.5 magnitude at visual wavelengths.
plural of cyclotron
Of or pertaining to optodynamics
天文学者たちは、光度が約330日周期で低下するミラ型変光星（周期が100日以上で非常に赤く、赤外線で1等以上、可視光で2.5等以上の振幅を示す脈動変光星）を注意深く観測した。
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