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Word: gastight (lookup in dictionary) (lookup stats)
Dates: during 1950-1959
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Usage:

Critical in the engine's design were the metal "piston rings" at the tips of the triangle that keep the chambers gastight. But NSU says the metal strips show no wear after 300 hours of fullspeed operation. The engine uses a conventional carburetor and can be made to burn many kinds of fuel, including diesel oil. It is not for sale yet, but NSU expects to have it debugged and in large production in about two years...

Author: /time Magazine | Title: Science: Power Without Pistons | 12/28/1959 | See Source »

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