单词 | mechanical pump |
释义 | mechanical pump But now boffins have constructed something from skin grafts and a mechanical pump. The Sun The machine had interchangeable valves, total loss oil system with mechanical pump and an emergency hand one. Retrieved from Wikipedia CC BY-SA 3.0 A later method uses a mechanical pump worked from one of the crossheads. Retrieved from Wikipedia CC BY-SA 3.0 Like other mechanical pumps developed during the same period, hearts were susceptible to deterioration, failure and breakdown. The Times Literary Supplement On one level a glass elevator lifts up the harvested grapes so that gravity, rather than mechanical pumps, can gently usher them into the twinkling stainless-steel vats. Times, Sunday Times |
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