| 21. | Instead came the idea of having multiple groups of cylinders and driven wheels mounted in one rigid frame.
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| 22. | From a technical prospective, the Rodeo and Amigo were built with a rigid frame that has eight crossmembers.
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| 23. | I wonder if instead of a rigid frame, if he ever tried the fuel tank suspended by a hose.
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| 24. | Previously, the only locomotives with two sets of drivers were articulated locomotives, but the duplex used one rigid frame.
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| 25. | Prestressed concrete is a major advancement in concrete engineering and has effectively been used in rigid frame bridge construction.
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| 26. | Unlike the rasp or file, the surform is made of a sheet-thin gauge steel mounted on a rigid frame.
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| 27. | With the bell now fixed in a rigid frame, the new clock mechanism uses a hammer to strike the bell.
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| 28. | Cam that is activated by the climber's body moving down to rotate the simple grab cam inside a rigid frame.
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| 29. | It swiveled independently from the main frame of the locomotive, in contrast to the English engines which had rigid frames.
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| 30. | Conventional traction kites use either a rigid frame inflated with a pump prior to launching or ram air inflated cavities.
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