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出典:Wiktionary
出典:『Wiktionary』 (2015/08/12 02:53 UTC 版)
Replaced the earlier MBtu (one thousand BTUs) as the 'M' could be misinterpreted as the SI prefix mega- (one million) or milli- (one thousandth)
MMBtu (複数形 MMBtus)
MMBtu