The use of wedges is another widely spread method in quarries primarily for the dividing up of loose blocks.

采石场中另一种广泛使用的方法是使用楔子来分割开松的块石。

youdao

The use of wedges is another widely spread method in quarries primarily for the dividing up of loose blocks.

采石场中另一种广泛使用的方法是使用楔子来分割开松的块石。

youdao