| 单词 | m-type asteroids |
| 释义 | M-type asteroidsM-type asteroidsA class of asteroids that is fairly common in the main belt, having featureless spectra that are distinguished by high albedo. Their surfaces have a metallic composition (nickel and iron) plus a varying amount of silicates. (16) Psyche, 250 km in diameter, is the largest of the M-Type asteroids. |
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