【摘要】 本文提出了超广角井下电视系统视场角的概念及标定，以及利用该电视系统对井内落物尺寸进行精确测量的方法。文中对误差产生的原因进行了分析。更多还原

【Abstract】 This article describe the concept and definiens of angle of view of super wide angle bore hole television system, and by means of this television system to measure the object in the well accurately. The writings also analyze the cause of the error.更多还原