理学 计算机系统 释 personal computer; PC 个人计算机 通用计算机的一种，主要硬件模块包括电源、主板、中央处理器、内存、外存（机械硬盘或者固态硬盘）等。通常由单个用户独用，适合工作和家庭环境。
通论 计算机系统类型 释文 personal computer, PC 个人计算机
- divergent meniscus lens
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- Diversification Strategy