piperock

例句：

1. 1. The geologist used a piperock to drill down into the earth.
   地质学家使用岩心管钻入地下。
2. 2.The engineer designed a device to extract piperock from the ground.
   工程师设计了一种从地面提取岩心管的设备。
3. 3. The company specializes in producing piperock for the construction industry.
   该公司专门生产用于建筑行业的岩心管。