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roentgen ray
Same as x-ray; rarely used these days. X-ray was the coinage of Wilhelm Röntgen, who discovered them.
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创建者
- Kevin Bowles
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(Diamond) 9014 分数 - 50% positive feedback
Same as x-ray; rarely used these days. X-ray was the coinage of Wilhelm Röntgen, who discovered them.
(Diamond) 9014 分数