caving的中文翻譯是什麼意思

The river was caving the banks.

河水在兩岸衝了個洞.

You should wear hard hats when caving to protect the head from bumps and falling rocks.

在開採洞穴時,你必須要戴上安全帽,以防止頭部撞到突起物,或者被掉落的岩石砸傷.

Increasing recovery rate coal is one of key problem in studying wallcoal caving.

提高頂煤回收率是綜放開採研究的關鍵問題之一.

Finally , the paper considers that the fully mechanized coal caving mining is helpful control outburst hazard.

具突出危險性的厚煤層採用綜採放頂煤開採法對消突是有積極作用的.

Caving means exploring the passages underneath the hills.

洞穴探險運動是指探察山中的通道而進行的活動.