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.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.Archaean...
A stove will be built up, only needs couple adobes.炉子是要砌的.那有几块土坯就行.The adobes and bricks were very near, just was in front of our house.土坯和砖都近得很, 就堆在我们的房头上.The heating mechanism of hollow cathode effect plasma sintering ...