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operational research (or)
operational research (or)
英
[operational research (or)]
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[operational research (or)]
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作业研究
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单词结构:
operational research (or)
字母数:25
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🎯 重点记忆:
单词拼写:operational research (or)
核心含义:作业研究
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更新时间:2026-02-04 14:17:52