Learning on 05/18/2026
環境 換気 伝熱May 18, 2026, 3:31:06 AM
Study time: 1 minute(s)
Today's learning: 1
New: 10
Consecutive study days: 1
Difficult review: 1
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May 18, 2026, 3:31:06 AM
Study time: 1 minute(s)
Today's learning: 1
New: 10
Consecutive study days: 1
Difficult review: 1