| 单词 | diamond grain |
| 释义 | > as lemmasdiamond grain 8. The smallest English and U.S. unit of weight (for the origin see quot. 1543); now = 1/ 5760 of a lb. Troy, 1/ 7000 of a lb. avoirdupois. diamond grain (see quot. 1883). fine grain (see fine adj. 2a(b)). ΘΚΠ the world > relative properties > measurement > measurement by weighing > [noun] > unit or denomination of weight > smallest unit or grain grain1543 1543 R. Record Ground of Artes i. sig. N.v After ye statutes of England,..the leaste portion of weyghte is commonly a grayne, meanynge a grayne or corne of whete, drye, and gathered out of the myddell of ye eare. 1660 R. Boyle New Exper. Physico-mechanicall vi. 59 We found the weight increas'd onely by one Grain. 1672 J. Dryden Conquest Granada ii. Epil. 159 None of 'em, no not Jonson, in his height Could pass, without allowing grains for weight. 1684 R. Waller tr. Ess. Nat. Exper. Acad. del Cimento 77 A pair of Scales that turned with the 1/ 48 part of a Grane. ?1750 J. Wesley Primitive Physick (ed. 2) 91 Take..from eight to twelve Grains of Calomel. 1825 ‘J. Nicholson’ Operative Mechanic 763 The assayers' grains are called fine grains. 1870 W. S. Jevons Elem. Lessons Logic xxvi. 222 When a chemist analyses a few grains of water. 1883 A. H. Church Precious Stones vii. 50 It [the carat] is, however, spoken of as being equal to 4 grains, the grains meant being ‘diamond’ grains, and not ordinary troy or avoirdupois grains. Thus a diamond grain is but .7925 of a true grain. < as lemmas |
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