释义 |
nitrous oxideni‧trous ox‧ide /ˌnaɪtrəs ˈɒksaɪd $ -ˈɑːk-/ noun [uncountable]  - A can of whipped cream uses nitrous oxide, an anesthetic, as a propellant.
- For instance, he taught me how to use nitrous oxide for its effect in combating physical pain.
- Increasing atmospheric levels of nitrous oxide currently stand at about eight percent above pre-industrial levels.
- It would also reduce sulphur dioxide and nitrous oxide emissions, which cause acid rain, by 42,000 tonnes.
- Once produced, nitrous oxide remains in the atmosphere for about 150 years.
- Other reactive trace gases such as nitrous oxide and methyl iodide also remain at elevated and aberrant levels.
- The cocktail of greenhouse gases includes chlorofluorocarbons, methane, nitrous oxide and carbon dioxide.
- The researchers have found nylon production to be responsible for up to 10 percent of the increase in nitrous oxide.
a gas used by dentists to reduce pain SYN laughing gas |