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当我读了《探矿工程》1987年第1期刊登的李粤南同志的《应用PC-1501计算机绘制钻孔轴线立体图》一文后，我队进行了应用。我们在使用过程中，作了如下改进。现将改进部分介绍如下：1．对测斜数据的处理将原来程序主程序中放入DATA语句中的钻孔坐标数据改为测斜数据，即改为测点孔深、顶角、方位角。然后通过赋值语句，对测斜数据采用均角全距法进行处理，把使测斜数据转换为钻孔空间坐标值的工作由计算机直接完成。
When I read the article “Application PC-1501 computer drawing drilling axis perspective” published by Comrade Li Yue Nan published in the first issue of Prospecting Project in 1987, our team applied it. We use the process, made the following improvements. The improvements are introduced below: 1. Data processing on the incline will be the original program into the main program DATA statement drilling coordinate data changed to incline data, that is, the measured hole depth, angle, azimuth. And then through the assignment statement, the survey data is processed by the method of mean-angle and full-range method. The work of transforming the data of the survey diagonal into the coordinate of the drilling space is completed directly by the computer.