| 单词 | spring sweep |
| 释义 | > as lemmasspring sweep ΘΚΠ society > occupation and work > equipment > mills > [noun] > windmill > sail > type of spring sail1835 spring sweep1919 patent sail1924 fan-tail1934 1919 Jrnl. Franklin Inst. 187 178 In some cases these shutters worked against the tension of a spring instead of the pull of a weight, and such were known as Meikle's ‘spring sweeps’. 1924 Trans. Newcomen Soc. 1922–3 3 50 It was desired to fit patent sail regulation instead of ‘spring’ or ‘sail’ sweeps. < as lemmas |
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