机械零件 - 2026 进行中

科目: 机械零件
级别: XI (I级最简单，XII级最难)
类别: 大学生
试题语言: English
题数: 15
问题示例: A helical compression spring has an initial tension of 80 N and a spring rate of 18 N/mm. What force is required to produce a deflection of 10 mm? 180 N, 240 N, 260 N, 320 N