| 单词 | oil sand |
| 释义 | > as lemmasoil sand oil sand n. a porous rock stratum, typically of sandstone or unconsolidated sand, impregnated with oil. ΘΚΠ the world > the earth > minerals > mineral sources > [noun] > strata containing minerals fuller's eartha1350 fulling eartha1399 fulling clay1647 second bottom1787 iron pan1811 ledge1847 blue lead1854 oil shale1866 oil sand1875 Cambridge coprolite1881 Cambridge greensand1882 gem-bed1886 the world > the earth > structure of the earth > structural features > formations by contents > [noun] > containing minerals field1672 oil pool1863 oil sand1875 trap1920 source rock1931 trend1939 1875 J. F. Carll Rep. Progress Venango Co. District ii. 8 In all the drillings brought up by the sand-pump and in all examinations of outcrops of oil sands, I am not aware that anything has been detected which can be supposed to have originated the oil in the rock itself. 1921 G. H. Cox et al. Field Methods Petroleum Geol. 217 Because of the higher average porosity of sandstone, most ‘oil sands’ are true sandstones, but many are porous limestones. 1925 A. B. Thompson Oil-field Explor. & Devel. I. ix. 426 Twenty or more workable oil sands have been encountered to 2,500 ft [in the Bibi-Eibat oil-field]. 2001 Denver Post 21 Jan. a13/1 Left behind by a vast inland sea, northern Alberta's oil sands here typically contain about 12 percent oil. < 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。