n.

a bowl-shaped geological formation at the top of a volcano

同義詞：volcanic crater

a faint constellation in the southern hemisphere near Hydra and Corvus

a bowl-shaped depression formed by the impact of a meteorite or bomb

Impact craters and Venus resurfacing history
Martian impact craters and emplacement of ejecta by surface flow
The geophysical signature of terrestrial impact craters
Geology and distribution of impact craters on Venus: What are they telling us?
The Geology and Distribution of Impact Craters on Venus: Initial Magellan Results
The rayed crater Zunil and interpretations of small impact craters on Mars
Distribution of mid-latitude ground ice on Mars from new impact craters.
Ripples revisited: non-classical morphology at the bottom of femtosecond laser ablation craters in transparent dielectrics
Physical properties of root cementum: Part 5. Volumetric analysis of root resorption craters after application of light and heavy or...
Physical properties of root cementum: part 8. Volumetric analysis of root resorption craters after application of controlled intrusi...