The displacer cylinder is made of glass test tube and the glass syringe are made as the power piston .The students can observe what happening inside the engine what the engine is operating . In this research we try to investigate the relations between the hot air engine characteristics and the design parameters , and base on the results .We designed and made a hot air engine car with a good performance .

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The roll is happening because as the Atlantic wides at the Equator, the giant S American Plate is pinned at the tip, so the top part must roll over part of the Caribbean Plate and also the Nazca Plate to the west.

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He introduces the reader to Shigeru Miyamoto, the salaryman behind Super Mario Brothers and the Wii. He provides a pen portrait of Aharon Farkash, a former head of Mossad who makes a powerful case for focusing on the vital few terrorist leaders (a move others call "targeted assassinations") rather than Israel's recent blunderbuss approach. The list could go on: wherever there is something interesting happening in the world, from Silicon Valley's entrepreneurial frenzy to sub-Saharan Africa's AIDS epidemic, the author seems to have talked to the most interesting people involved and thought about the most striking developments.

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2 The provisions of valve flap stent thrust nut in space; 4.3 will bring more than ejector stem components, and into the valve flap bracket, now can adjust screw ring on the injector; adjustment ring discharge pipe may be twisted too high in case of this case, when the valve assembly after the valve flap in contact with its seat before the valve flap seat will have an additional load on the adjustment ring edge, in order to avoid this from happening, should enable the adjustment ring hole just below the injector thread, through which holes should not be able to see thread.

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