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1 ppm постоянного воздействия
Gold mining: parts per million continuously, ppm continuouslyУниверсальный русско-английский словарь > ppm постоянного воздействия
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2 частей на миллион постоянного воздействия
Gold mining: parts per million continuously, ppm continuouslyУниверсальный русско-английский словарь > частей на миллион постоянного воздействия
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