EOabbr.工程指示(=Executive Order)abbr.椭圆的轨迹(=Elliptical Orbit)abbr.终端站(=End Office)abbr."异-或"逻辑(=Exclusive OR)eomsabbr.=end-of-message sequence 报文结束顺序；end-of-message sequence 消息结束顺序

1. The funnel-shaped self-potential curve of the Eocene sands is well marked.
   始新统砂层的漏斗形自然电位曲线形态很明显。
2. The first spreading cycle resulted in the formation of Wenchang mudstone, Eocene,which is the important and main source rock of the basin.
   第一扩张旋回中形成的始新统文昌组泥岩是珠江口盆地的主要烃源岩。