| 单词 | proof mortar |
| 释义 | > as lemmasproof mortar ΚΠ 1756 H. Manningham tr. B. Forest de Bélidor Ess. Theory of Gunpowder in tr. P. Surirey de Saint-Rémy Compl. Treat. Mines (new ed.) 43 The Gunpowder Manufactured in his Kingdom shall not be esteemed Proof, 'till three Ounces, which is the Charge of a Proof-Mortar,..shall throw a Globe, of 60 Pounds Weight, to the Distance of [etc.]. 1839 A. Ure Dict. Arts 626 The result of more than two hundred discharges with the proof-mortar. 1872 H. Barnard Mil. Schools & Courses Instr. in Sci. & Art of War 388 Firing different sorts of powder from the proof mortar. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。