radium watch造句
造句与例句
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- Several million radium watches and clocks and instrument dials were made through World War II.
- The most familiar type of radioactivity to most people in the first half of the 20th century was a radium watch dial, which was always green.
- Just an aside question, would holding a radium watch up to your eyes and looking at its glow for too long cause damage to your eyes due to the radioactivity?
- It's difficult to see radium watch in a sentence. 用radium watch造句挺难的
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