corundums
(idiomatic, aviation, slang) To switch off the transponder (“a radar or radio transceiver that transmits some signal in response to receiving a predetermined signal”) of an aircraft, for example, b...
plural of corundum
An optoisolator
plural of acre-dale
鉱物学者は高地の鉱山で採取したコランダムの結晶を丁寧に分類した。
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