sample drilling造句

"' Duplus "'was a diving support and sample drilling ship for the petrol industry.
There's been core sample drilling around the mine area since then, so mining may return.
The estimate of its reserves comes from a computer model that is based, among other things, on a number of sample drillings.
They were reportedly seeking answers concerning why their sample drilling did not turn up the same amount of gold that Bre-X tests had shown.
It's difficult to find sample drilling in a sentence. 用sample drilling造句挺难的