| 单词 | impact crater |
| 释义 | > as lemmasimpact crater impact crater n. a crater or a hollow in the ground believed to have been produced by the impact of a meteorite. ΘΚΠ the world > the earth > land > landscape > low land > hollow or depression > [noun] > other slack?a1400 swamp1691 cauldrona1763 hog wallow1829 tomo1859 kettle1866 pocket1869 dolina1882 kettle hole1883 frost hollow1895 impact crater1895 uvala1902 frost pocket1907 sotch1910 pingo1938 lagg1939 tafoni1942 1895 G. K. Gilbert in Bull. Philos. Soc. Washington XII. 265 The inquiry has followed three lines. First, an investigation of the ellipticity of lunar craters; second, an experimental investigation of the relation between incidence angle and ellipticity of impact craters; third, a more refined investigation of the orbital relations affecting the incidence angles of moonlets. 1895 G. K. Gilbert in Bull. Philos. Soc. Washington XII. 291 Does the earth exhibit impact craters? If not, then erosion and sedimentation have destroyed them. 1965 R. B. Baldwin Fund. Survey Moon vii. 66 If it can be shown that the impact craters on earth are..similar to lunar craters..we will be on firm ground in considering that the lunar craters..were formed by the impacts..of meteorites. 1967 Listener 20 Apr. 521/2 Another impact crater is that at Wolf Creek in Australia, where the diameter is half a mile. < as lemmas |
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