But even in normal working days there are many annoying moments, stressful situations and problems waiting for your solutions.

可即便在正常情况下，你也会遇到不少烦心的时刻、棘手的问题。

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This paper introduces the running status of Qilu TR system and presents some problems arise during the startup and normal operation as well as the corresponding solutions.

介绍了三元制冷系统的运行情况，在开车和正常操作中遇到的问题及解决办法。

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Some others try to invent new problems, with solutions that are difficult to understand and explain for normal users.

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