特别是对于手持设备，交互设计者、工业设计者、程序员和机械工程师的紧密的合作是必需的。
Especially for handhelds, close collaboration among interaction designers, industrial designers, programmers, and mechanical engineers is a real necessity.
机械工程师为各大制造厂商、科研实验室和检测服务机构设计和生产各种各样的机械零部件及系统。
Mechanical engineers design and produce all kinds of mechanical components and systems for manufacturing firms, research laboratories, and testing services.
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