| 单词 | crop-tin | 
| 释义 | > as lemmascrop-tin   crop-tin  n. (see  12). crop-tin  12.  Tin-mining. The best quality of tin-ore obtained after dressing; more fully  crop-ore,  crop-tin. ΘΚΠ the world > the earth > minerals > ore > 			[noun]		 > metal ore > tin ore tin-stone1602 crop1778 row1778 stream-tin1778 tin-stuff1778 wood-tin1787 stannolite1843 toad's eye tin1850 cassiterite1858 tin wash1898 1778    W. Pryce Mineralogia Cornubiensis 218  				The crop and leavings of Tin. The first is the prime Tin. 1778    W. Pryce Mineralogia Cornubiensis 319  				The finest black Tin is called the Crop. 1884    M. Beck Erichsen's Sci. & Art Surg. 		(1888)	 348  				Two pits are formed; in the one nearest the mill the purer and heavier part of the ore, or crop, is deposited. < as lemmas | 
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