| 单词 | alum boiler |
| 释义 | > as lemmasalum boiler alum boiler n. ΚΠ 1757 tr. J. F. Henckel Pyritologia 339 This lie, after all the vitriol is shot and removed, the alum-boiler takes to his hut. 1855 Philos. Mag. 9 423 To obtain the Epsom salts, the liquor is evaporated sometimes by waste heat from the alum boilers when the salt crystallizes. 1943 C. S. Smith in C. S. Smith & M. T. Gnudi tr. V. Biringuccio Pirotechnia Introd. p. xv It was men like Biringuccio, the practical metalworker, the dyers, pottery makers, alum boilers, and kindred artisans, who accumulated the basic facts for a chemical science. < as lemmas |
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