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Is a transparent watch good? The back cover of the watch can play a very good role in protecting the watch, preventing dust and water from entering the inside of the watch. Some mechanical watch back covers are transparent. Is...
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People have a natural sense of curiosity about various machines. For example: Why can clocks and watches run round and round, making a wonderful sound of ticking? Even if you have spied on the movement, you may not be able...
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