最重要的电子测试和测量仪器之一是阴极射线示波器。
One of the most important electronic test and measuring instruments is the cathode-ray oscilloscope.
井下声波电视测井图上的一种异常现象。在电缆提升的过程中，由于下井仪器在井中的不稳定运动，而在阴极射线管上显示出异常的一种效应。
On borehole televiewer logs. An unusual effect produced on the cathode-ray tube display by erratic movement of the tool as it drags along the borehole.
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