求翻译：风化基岩段开挖时，能用挖掘机开挖的均采用机械开挖，机械开挖困难时，采用放小炮松动爆破，挖掘机挖出后，再用风镐修整。是什么意思？

Section of weathered bedrock excavation, the excavation can be used excavators are used mechanical excavation, mechanical excavation difficulties, the use of small ones loose cannon blasting, excavators dug up after, and then air pick trim.

正在翻译，请等待...

When the decency bedrock section excavates, can use the excavator to excavate uses the machinery to excavate, when the machinery excavates the difficulty, uses puts the small artillery to become less crowded the demolition, after the excavator digs out, then uses the air pick to repair and maintain.

When weathered bedrock section of excavation, excavation of a dredge are used mechanical excavation, mechanical excavation of difficulty, with small cannons loose blasting, after the excavator dug up, and then pick dressing.

Section of weathered bedrock excavation, the excavation can be used excavators are used mechanical excavation, mechanical excavation difficulties, the use of small ones loose cannon blasting, excavators dug up after, and then air pick trim.