纳米技术 - 2026 进行中

科目: 纳米技术
级别: X
类别: 大学生
测试题目: 英语
问题示例: A researcher models a nanoparticle as a sphere with radius r. If the radius is reduced while the material density remains constant, how does the particle's total mass scale with r? It scales as r, It scales as r², It scales as 1/r, It scales as r³