The image generated is a result of attenuation of the beam by all structures along the path of the beam and results in a gray-scalepicture.
引起的图象是射线的衰减的结果由所有结构沿射线和结果的道路在灰色极谱图片。
2
He was doodling during the meeting as we were talking, and when he got up to leave the room I grabbed the paper he was doodling on, and he had doodled a complete, to scale, picture of a BlackBerry.