安检与医用X光机原理相似
The principle of security check is similar to that of medical X-ray machine
李子平教授表示：按照我们医用的X光机来讲，它们原理都是一样的。X光机不外乎三个部分，一个就是球管，发出X光放射源，X光穿过物质，才能看得到我们肉眼常规普通光线看不到的东西，一定要有球管或者X线。第二，就是要有高压变压器，高压变压器把一般的电压变成高压，然后就提供球管，去产生电子然后再产生X光，这是第二部分。第三部分就是控制器，就说我需要放多少的X光量，要有控制板，所有X光机都逃不出，不管是X光还是CT也一样，尽管它里面结构很复杂，它结构应该是一样的。
According to our medical X-ray machines, they all work in the same way. X-ray machine is no more than three parts, one is the ball tube, which emits X-ray radiation source. Only when X-ray passes through the material, can we see what we can't see with the normal light of the naked eye. There must be a ball tube or X-ray. Second, there should be a high-voltage transformer. The high-voltage transformer turns the general voltage into high voltage, and then provides a ball tube to generate electrons and then generate x-rays. This is the second part. The third part is the controller, that is to say, how much X-ray I need to put, there must be a control board, all X-ray machines can not escape, no matter X-ray or CT, although its internal structure is very complex, its structure should be the same.