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process for the production of printed circuit boards with selectively to the lötaugen and lochwandungen applied galvanic lead tin coatings
process for the production of printed circuit boards with selectively to the lötaugen and lochwandungen applied galvanic lead tin coatings
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机译：选择性地对lötaugen和lochwandungen施加电镀铅锡涂层的印刷电路板的生产方法
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摘要
the invention describes a method for the manufacture of printed circuit boards with kupferoberflächen where after the raising and drying of lead tin layer of a procedure is used in the lötaugen of pri
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