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Joe D – I’ve seen wave solder tanks in a high-tech electronics factory once back in the late 1970’s in USA. It is just a bath of molten solder that the component-populated pcb is lowered into.
China's largest tunnel boring machine (TBM) cutter head, with a record-breaking diameter of 16.64 meters, descended at the construction site of the Haitai Yangtze River Tunnel in East China's ...
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