| 单词 | mica flap |
| 释义 | > as lemmasmica flap mica flap n. the flap of a mica valve. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > control(s) > [noun] > valve > parts of shank1660 seat1841 mica flap1906 spool1960 1906 J. W. Thomas Ventilation, Heating & Lighting of Dwellings ii. 27 There are many chimney ventilators on the market, some having mica flaps..to shut against a down current. 1986 E. Hall in A. Limon et al. Home Owner Man. (ed. 2) iii. ix. 439 A hinged mica flap is suspended inside the ventilator against this grille. < as lemmas |
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