动力头及孔口板调转方向，可直接钻凿仰孔，大大增加钻孔倾角范围。
It can increase the hole inclination Angle range and drill elevation Angle holes, while setting the top drive power head and hole top plate toward the opposite direction.
对生物结构的观测表明在孔口附近的纤维是连续绕过的，已有实验证明这种绕孔结构的强度比钻孔结构有显著提高。
From the observation of biological structure, it was found that the fiber changes its density and direction continuously when passing around a hole.
本实用新型属于一种钻孔装置，具体涉及一种地浸注液钻孔孔口装置。
The utility model belongs to a hole drilling device, specifically, a sub-immersed liquid hole drilling device.
本实用新型属于一种钻孔装置，具体涉及一种地浸注液钻孔孔口装置。
The utility model belongs to a hole drilling device, specifically, a sub-immersed liquid hole drilling device.
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