单词	半係官出的
释义	同Demi-official
随便看	oxygen minimum layer oxygen-minimum zone oxygen (o) oxygen--o2 oxygen of publicity oxygenolysis oxygenous oxygen overvoltage oxygen partial pressure oxygen-- partial pressure oxygen; partial pressure oxygen permeability oxygen plant oxygen plasma oxygen plasma cutting oxygen point oxygen poisoning oxygen-poor water oxygen potential oxygen pressure gauge oxygen pressure regulator oxygen probe oxygen processes of steel making oxygen protection apparatus oxygen pulse