| 21. | The prosthesis does not look like a leg-- more like curved metal bars with air valves and binding mounts.
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| 22. | The air-scouring process basically involves the pushing of a ball within the air valve downwards to release the air faster.
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| 23. | In 2009, a viewing area for visitors was arranged; it offers views of the reach upstream, central and air valves.
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| 24. | If the water level is allowed to rise, it may flood the system and trickle through the radiator air valves.
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| 25. | Typically, the air valve is linked to metering rods which are raised as the air valve opens, thereby adjusting secondary fuel flow.
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| 26. | Typically, the air valve is linked to metering rods which are raised as the air valve opens, thereby adjusting secondary fuel flow.
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| 27. | As well as the spillway, there are six pipes embedded into the centre of the dam, controlled automatically by system of air valves.
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| 28. | Tenor, baritone and bass concertinas often have an air valve in the position that would otherwise be occupied by the instrument's highest note.
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| 29. | As the airflow increases through the secondary bores, the air valves are pushed down, rotating a cam that lifts the secondary metering rods.
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| 30. | The fork also featured a Schrader-type air valve which allowed air assistance from 0-6 psi to increase the spring rate in the fork.
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