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| durionising | |||
quench polish quench (Quench polish quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer or Melonite. Three steps are involved: nitrocarburize ("quench"), polish, and post-oxidize ("quench").  wikipedia.org Andrey250780) | |||
| hard chrome plating | |||
| hard chromium plating | |||
| твёрдое хромирование: 3 phrases in 3 subjects |
| Electrochemistry | 1 |
| Makarov | 1 |
| Metallurgy | 1 |