| 21. | Heron of Alexandria invented a basic steam engine and demonstrated knowledge of mechanic and pneumatic systems.
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| 22. | Pneumatic systems incorporate a hand pump to pressurize the interior of the mast causing it to rise.
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| 23. | Pneumatic system failure, associated loss of altitude, and various unfamiliar situations may cause loss of situational awareness.
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| 24. | As atmospheric icing occurs and ice builds up, a pneumatic system inflates the boot with compressed air.
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| 25. | The transaction also includes Halkey-Roberts Corp ., a manufacturer of valves and pneumatic systems for disposable medical applications.
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| 26. | A pneumatic system was proposed by proponents of Edison's direct current as the basis of the power grid.
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| 27. | However, I think it would be a bad idea to use hydrogen for any sort of pneumatic system.
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| 28. | It uses an pneumatic system to capture each dose and deliver it to its either stocked or dispensed location.
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| 29. | Only when actually about to fire, would the large hydro-pneumatic system raise the 5-tonne barrel up over the parapet.
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| 30. | Mk III and IV carriages incorporated a new variable-recoil hydro-pneumatic system and moved from above to below the gun barrel.
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