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user(daf7828ae1fd)  Jun 29, 2026, 7:18:35 AM Study time: 24 minute(s)
Today's learning: 55
Consecutive study days: 9
Difficult review: 1
金属材料 非金属材料 溶接

user(daf7828ae1fd)  Jun 4, 2026, 3:57:25 PM Study time: 2 minute(s)
Today's learning: 22
Consecutive study days: 12
Difficult review: 1
電気計測 溶接

user(daf7828ae1fd)  May 28, 2026, 3:56:07 PM Study time: 3 minute(s)
Today's learning: 10
Consecutive study days: 6
Difficult review: 1
電気工作 溶接