This is a Geiger counter for detecting radioactivity.这是一种盖革计数管,用来测量辐射的.A metal called uranium gave off a kind of radiation, which Marie Curie later called radioactivity.一种叫铀的金属发出一种射线, 后来玛丽·居里把这种现象称为放射性.The site was found...
The pad is impregnated with insecticide.垫子上满是杀虫剂。She was evidently impregnated with the idea of submission.服从的观念已深深刻在她的心坎上.Various phenolic formulations, impregnated in glass fabrics, were studied in this way.曾用此方法研究浸入玻璃...