Let me take an X-ray of your teeth to see if you have any decayed areas or cavities?
让我照个x光，看看你的牙齿有没有蛀烂的地方或牙洞。
In some cool core clusters, re-searchers have found central X-ray cavities that are produced by AGN activity.
在冷核星系团中发现了许多中央活动星系核（AGN）活动所造成的X射线空洞，等。
Under DC voltage the restraint and time lag phenomena of partial discharge (PD) in cavities or oil gap by X ray irradiation were investigated.
直流电压下X射线对气隙、油隙放电的激发过程存在明显的“滞后”现象，即：正极性电压下X射线照射首先抑制放电的发生；
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