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单词
critical mass
释义
critical mass
n.
1
the amount of fissile material needed to maintain a nuclear chain reaction
临界质量
(
指维持核反应堆链式反应所必需的可裂变物质数量
)
2
the minimum size required to start a thing off or to keep a thing going
(
使事情开始或维持运行所需要的
)
最低数量
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更新时间:2026/7/19 9:46:45