喷氨孔与水平线的夹角是影响这一过程的重要因素，本文对夹角的确定进行了理论分析。
The Angle, between ammonia flow and horizontal line, is so critical to affect the above - mentioned action. A calculating way for the Angle is discussed theoretically.
在同一铅垂面内，当视线在水平线上方时，视线与水平线的夹角。
Trying on drilling with high water level and large elevation angle;
在同一铅垂面内，当视线在水平线上方时，视线与水平线的夹角。
Trying on drilling with high water level and large elevation angle;
应用推荐