·2,447,543篇论文数据，部分数据来源于NoteExpress
华北晚古生代经历了3次大的海平面升降旋回，不同海侵事件在研究区内留下了不同的沉积纪录。
During the Upper Paleozoic in Huabei there were 3 main times of sea level eustacy which caused different deposits in research area.
youdao
应用推荐
模块上移
模块下移
不移动