材料学 - 2026 进行中

科目: 材料学
级别: IV
类别: 大学生
测试题目: 英语
问题示例: A composite wall has thermal conductivity 2 W/(m·K), area 0.50 m², thickness 0.10 m, and a temperature difference of 30 K. Assuming one-dimensional steady conduction, what heat-transfer rate passes through the wall? 30 W, 150 W, 200 W, 300 W