rockover core making machine

例句：

1. 1.The rockover core making machine is used to extract valuable minerals from the earth's crust.
   岩石覆盖核心制造机用于从地壳中提取有价值的矿物。
2. 2. This machine has a high efficiency and can be used in various mining fields.
   这种机器效率高，可以在各种采矿领域使用。
3. 3. The rockover core making machine is an essential tool for geological exploration.
   岩石覆盖核心制造机是地质勘探中必不可少的工具。