"It should be the cap of a drink bottle." Li yufen said anxiously as she handed the film bag to director Wei.
"I also heard from the teacher that a few children were playing, but later, for some reason, the child was stuck by a foreign object. It was a mess at that time. The teacher came to help, but he didn't bid for it. He said he swallowed the bottle cap directly. "
Under normal circumstances, it was common for children to swallow coins. The bottle cap ... Although it had the same diameter as a coin, it was much thicker. From an imaging perspective, it was not as easy to find as a coin.
After all, under normal circumstances, plastic items would not be visible under X - rays.
If one looked closely, they would notice that there was a slight difference in the density of the images, but it was difficult to tell at a glance like a metal object like a coin.
This was a little troublesome.
