2013年1月8日火曜日
Breechloaders
breech;load;er pronunciation: function: noun date: 1855 : a firearm that loads at the breech— breech╟load;ing adjective
2013年1月1日火曜日
Biochemical oxygen
biochemical oxygen demandfunction: noun date: circa 1927 : the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (as water polluted with sewage)
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