alpha iron 铁
alpha-iron 铁
alpha iron alloy 铁基合金
If he switched from gold to let's say iron, he also tried platinum, a number of different foils, he found that they count rate it still was 20 alpha particles per minute.
金箔的时候,计数率就变成零了,如果他把金换成比如说铁,他们还尝试了铂,还有一系列其他的箔片,他发现计数率还是每分钟。
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