archaean

archaean的英语例句

1. The Archaean and Katarchaean units are preserved mainly as relic masses.

   太古界与远太古界主要作为残余体保存下来.

2. Archaean era granulite facies metamorphite series are extensively outcropped in Sa - heqiao, Hebei province.

   冀东迁西洒河桥是太古代麻粒岩相变质岩系广泛出露的地区.

3. This type of graphite deposits were formend in the Late Archaean to Early Proterozoic.

   该类矿床的成矿时代多集中在晚太古代末至早元古代初期,并且具有全球性.