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Because the mechanical watch is to rely on power work, not rely on electricity, so the machine is a bit error is normal, and please take the hands of more than 8 hours a day. The time precision of the mechanical watch is influenced by many factors, in general, it is mainly the following 8 factors: External influence Is from the external effects of watches and clocks, depending on the working environment of the clock. Commonly used measures are: shock proof design, waterproof design, Antimagnetic design, additional protection shell etc.. Friction Friction usually has two positive and negative effects, it has positive on the one hand, such as friction wheel, automatic table between the friction between the spring and the box, On the other hand, friction can lead to the reduction of the transmission efficiency and the friction loss of the parts, thus affecting the timing. Commonly used solutions: to improve the lubrication conditions, According to different requirements, the use of different lubricants; using precious stones bearing or gasket; to improve the gear tooth surface conditions, including the use of scientific conjugate tooth profile and improve the surface finish and so on, But the general tooth surface is not lubricated (in this case, the friction of t
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