0 (used originally of a rocket) a counting backwards to check the time remaining until the beginning of an event, regarded as zero -- การนับถอยหลังก่อนที่จะมีเหตุการณ์บางอย่างเกิดขึ้น
It’s five minutes to countdown.
Both countdowns would proceed in parallel and required close synchronization.
Countdown's primary military specialty is astronaut/fighter pilot, and his secondary military specialty is electronics engineer.
Each includes video demos and audio instructions, countdowns and motivational commentary.
Most notably, the countdowns were shorter, with 10 to 15 songs, as opposed to the standard 20 on the current incarnation.
Most of their weekend countdowns are barter based, and include up to 5 minutes an hour of network ad inventory.
The show lasts for 120 minutes, with the chart being split into two top 10 countdowns.
The episodes were commercial-free and came with introductory station countdowns, suggesting a major leak from inside the network's production department.
Depending on the type of vehicle used, countdowns can start from 72 to 96 hours before launch time.
