existing profile是什么意思

用法例句

Several kinds of calculating methods of virtual section are analyzed and compared on the basis of measuring wells in four directions by ultrasonic theory,and the experimental results are presented,which has a certain value of reference for improving testing precision.

对于大直径钻孔的成孔质量检测,孔径、孔斜、偏心距是衡量井筒质量的重要参数,在利用超声原理对井筒进行四向测量的基础上,分析比较了几种有效断面的计算方法,并给出实验结果,对提高测试精度有一定参考价值。