矿层的英文：
ledge
manto

参考例句：
  • "a deposit, as of ore, parallel to local stratification."
    平行于局部地层的沉积物,如矿层。
  • Knowledge of the occurrence of chromite deposits is likewise incomplete
    对于铬铁矿矿层产状的了解同样是不完整的。
  • The country is level and it is not easy to follow the magnetite seams continuously
    地面是水平的，不容易连续地追踪此矿层。
  • Seams in the anorthosite series are only intermittently exposed
    斜长岩组中的矿层仅断续出露。
  • The Main Chromitite Seam and the Merensky Reef do not outcrop well
    主铬铁岩矿层及麦仑斯基矿层出露不好。
  • The chromite deposits in the Muskox Complex occur only in feldspathic peridotite
    在穆斯科克斯杂岩体中，铬铁矿矿层仅产于长石质橄榄岩中。
ledge是什么意思：
n. 岩架；壁架；窗台；矿层；暗礁
  • Get to the ledge!
    快跳到岩架上！
  • There are some objects of art on the ledge.
    壁架上有一些工艺品。
  • The Hekou group is the major ledge.
    河口组是主要的含矿层位。
  • A ledge between the parapet and the moat in a fortification.
    搁板在堡垒中护城河与护墙之间的搁板
  • That black grouper on the ledge is hoping to catch one.
    那个暗礁中的黑鲶鱼正要跳出抓住一条。
manto是什么意思：
席状交代矿床; 平卧状矿床; 矿层

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