例句與造句

1. Conversely, membrane gas separation is currently used to provide oxygen enriched air to pilots flying at great altitudes in aircraft without pressurized cabins.
2. This is achieved by reacting iron sulfides with oxygen ( in air or oxygen enriched air ) to produce iron oxides ( mainly as FeO, but with some magnetite ( Fe 3 O 4 ) ) and sulfur dioxide.
3. The term Oxygen Enriched Air ( OEN ) was accepted by the ( American ) scientific diving community, but although it is probably the most unambiguous and simply descriptive term yet proposed, it was resisted by the recreational diving community, sometimes in favour of less appropriate terminology.
4. It's difficult to find oxygen enriched air in a sentence. 用oxygen enriched air造句挺難的