| 单词 | four-stroke engine |
| 释义 | four-stroke engine (once / 407563 pages) n WORD FAMILY four-stroke engine USAGE EXAMPLESI am in an ultralight aircraft–really, a kite–powered by a four-stroke engine. Forbes(Oct 08, 2013) The four-stroke engine performed significantly better than the two-stroke in most of the categories, but still far worse than the car engines. Washington Post(Sep 16, 2013) It is called the “four-stroke engine” because the piston must make four strokes in the cylinder for each explosion or power impulse obtained. Pag?, Victor Wilfred, Aviation Engines—Design?Constructio...(2011) n an internal-combustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke; work is done on the third stroke and the products of combustion are exhausted on the fourth stroke Syn|Hyper four-stroke internal-combustion engine ICE, internal-combustion engine a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine |
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