月坑密度 的英文怎麼說

中文拼音 [yuèkēng]
月坑密度 英文
crater density
  • : Ⅰ名詞1 (月球; 月亮) the moon 2 (計時的單位) month 3 (姓氏) a surname Ⅱ形容詞1 (每月的) mo...
  • : Ⅰ名詞1 (秘密) secret 2 [紡織] (密度) density 3 (姓氏) a surname Ⅱ形容詞1 (距離近; 空隙小)...
  • : 度動詞[書面語] (推測; 估計) surmise; estimate
  1. Older mare flows have been exposed to bombardment longer than younger flows, so they have higher crater densities

    較古老的海巖流受到撞擊的時間比年輕巖流久,因此它們的隕石較高。
  2. Scientists already know the ages of the mare flows at the apollo sites from analyzing the radioisotopes in the rock samples, so they can estimate the ages of other flows by comparing their crater densities with those of the landing - site flows

    科學家分析巖石樣本中的放射性同位素,已經知道阿波羅登陸點的海巖流年齡;因此將其他巖流的隕石與登陸點巖流的隕石相比,科學家便能估計其他巖流的年代。
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