例文
- Uses 24v DC and cost about $ AUS70 with transformer, it will form a heavier-than-air fog in quiet conditions.
- In 1851, an experimental air fog whistle and reed horn was installed at Beavertail Lighthouse at the entrance to Narragansett Bay, Rhode Island.
- On 1 January 1883, a compressed air fog siren was installed, but the process of preparing it for use in fog was usually taking a long time.