在偏东部，卫星捕捉到了一列行进中的火车----一段高亮度曲线。
Look at the center of the image, near those smaller reservoirs.To the east is a moving train -- the bright curved line.
用数字存贮示波器捕捉下载荷时间曲线，记录在磁记录器上保存。
With this system, the impact oscillogram of load vs time obtained and displayed by a digital storage oscilloscope are recorded on a magnetic tape.
对于右面的曲线，捕捉左图曲线旋转所产生面的端点。对下图曲线同样处理。
For the curve from the right, make the pointer snap to the end of the revolved surface from the curve on the left.
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