半永久性低压
According to the results of paleoclimate study and estimate of semi-quantitative weathering index, the weathering extent of sediments was low and the topographic relief between the Kuqa Depression and South Tianshan was obviously in Early-Middle Triassic;
根据风化指数半定量计算的结果,结合前人古气候的研究成果,早-中三叠世该区沉积物风化程度低,推测此时地形高差较大;
英语网 · 高考英语
英语网 · 双语娱乐资讯
英语网 · 少儿英语故事
英语网 · 英语词汇