| 单词 | doctor engine |
| 释义 | > as lemmasdoctor engine c. Chiefly U.S. More fully doctor engine. A small or auxiliary steam engine, esp. one for supplying water to a steamboat's boiler; a donkey engine. Now historical. ΚΠ 1849 Madison (Indiana) Weekly Courier 18 Apr. They put doctor engines in steamboats to make them run faster. 1875 ‘M. Twain’ Old Times Mississippi vii, in Atlantic Monthly Aug. 191/1 The engineers drowsed around and allowed chips to get into the ‘doctor’ and shut off the water supply from the boilers. 2018 S. T. Bisbee Engines of Rebellion i. 24 Doctor engines were equipped with at least one feedwater heater that used recirculated steam. < as lemmas |
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