Fr 详细解释
Fr
abbr. 故障率（=failure rate）
abbr. 故障记录（=faillure record）
abbr. 故障报告（=failure report）
英英释义
名词 fr:
a radioactive element of the alkali-metal group discovered as a disintegration product of actinium
同义词：francium, atomic number 87
补充
FrFr1.元素钫(francium)的符号例句
1. Fr Buckley.巴克利神父。热门单词推荐
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