scan-spot

基本解释

In television and facsimile, the path traced by scanning spot.
在电视和传真中，由扫描点描绘出来的路径。
In this paper analyzes and demonstrates two problems in the experiment of using oscillograph:one is the function of triggering level,the other is why the horizontal scan spot moves in uniform motion.
本文对“示波器的使用”实验教学中关于触发电平的作用、调节它的目的和水平扫描点匀速运动的问题进行了分析和论证。
An electron beam, forming a scanning spot on the signal plate, zigzags its way, line by line, across the plate.
在信号板上形成扫描点的电子束，逐条地曲折扫过信号板。
The doctors gave him an ultrasonic brain scan.
医生给他做了脑部超声波扫描检查。
I'm afraid we are in for a spot of trouble.
恐怕我们是一定要遇到麻烦了。