| 释义 | 
		mas·con AHD[măsʹkŏn'] D.J.[ˈmæsˌkɒn]K.K.[ˈmæsˌkɑn]n.(名词)- A mare on the moon having rock of greater density than that of the surrounding area, thus exerting a slightly higher gravitational force.质量密集:月球上的阴暗部,其内部岩石比周围地区的岩石的密度大,因此产生略大些的引力
 
 - mas(s) mas(s)
 
 - con(centration) con(centration)
 
 
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