Dangers exist even if travelers keep their laptops closely held the whole time but connect to Internet networks abroad.

即使旅行者一直随身拿着他们的笔记本电脑，但只要连接到外面的因特网危险就存在。

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Diagnostic theory of embedded device, how to interface to PROFIBUS system and Internet network, how to design the whole software and how to connect the hardware was discussed in the paper.

文中将讨论嵌入式诊断设备的诊断原理，如何将嵌入式设备挂接到PROFIBUS总线系统和以太网中，如何工作，软件设计及硬件连接等。

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