Русско-английский научно-технический словарь
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• The length of the tungsten electrodes when new is 4 in., and they can be burnt away until a length of 1 in. remains.
Русско-английский научно-технический словарь
• The length of the tungsten electrodes when new is 4 in., and they can be burnt away until a length of 1 in. remains.