air driven hammer
常见例句
- The air-driven down-hole hammer driven drilling is now one of higher-effect drilling methods in hard rocks.
气功潜孔锤钻进是当前钻孔硬岩钻进效率较高的方法之一； - The air-driven down-hole hammer drilling is still very effective and speedy in well drilling in karst limestone area.
在水文水井中，气动潜孔锤钻进仍可发挥它高效率、高速度的作用。 返回 air driven hammer