| 单词 | proof stick |
| 释义 | > as lemmasproof stick proof stick n. a rod by means of which a sample of the contents of a vacuum sugar-boiler may be taken without admitting air. ΚΠ 1839 A. Ure Dict. Arts 1206 The proof-stick, an ingenious brass rod for taking out a sample of syrup without admitting air. 1886 Harper's Mag. June 88/1 When the proof stick is run into this tube and turned half-way round, the stopcock is opened and the stick is filled with the liquid. 1987 Daily Gleaner (Kingston, Jamaica) 12 Mar. 3 He and another employee at the Innswood [sugar] factory were putting a proof stick in the vacuum pan when the pan exploded, causing him serious injury. < as lemmas |
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