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The basic production flow of drawer slide machine is roll forming, punching, and cut off to length. Processes of drawer slides roll forming is a continuous cold rolled steel strip passing through a plurality set of upper and lower shaped rollers, and then punching, embossing, straightening, and cut off to length. Straightening is an important ...
"y" denotes time for 440 yards (402.34 m) which was ratified as a world record in this event. The "Time" column indicates the ratified mark; the "Auto" column indicates a fully automatic time that was also recorded in the event when hand-timed marks were used for official records, or which was the basis for the official mark, rounded to the 10th of a second, depending on the rules then in place.
The British 400 metres hurdles athletics champions covers three competitions; the current British Athletics Championships which was founded in 2007, [1] the preceding AAA Championships (1914-2006) and the UK Athletics Championships which existed from 1977 until 1997 and ran concurrently with the AAA Championships.
Sydney Michelle McLaughlin-Levrone (/ m É™ ˈ É¡ l É’ k l ɪ n l É™ v ˈ r oÊŠ n i / mÉ™-GLOK-lin lÉ™v-ROH-nee; née McLaughlin; born August 7, 1999) [7] is an American hurdler and sprinter who competes in the 400 meters hurdles and is the world record holder in that event.
Runners start in staggered positions and race in separate lanes for the entire course. In many [ clarification needed ] countries, athletes previously competed in the 440-yard dash (402.336 m)—which is a quarter of a mile (1,760 yards ) and was referred to as the "quarter-mile"—instead of the 400 m (437.445 yards), though this distance is ...
This prevents confusion and collisions during transfer. Unlike the 4 × 100 m relay, runners in the 4 × 400 typically look back and grasp the baton from the incoming runner, due to the fatigue of the incoming runner, and the wider margins allowed by the longer distance of the race. Consequently, disqualification is rare.
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