Granite mechanical Cheebtsam yog dav siv nyob rau hauv precision processing device khoom vim lawv zoo heev zog xws li siab tawv, tsis tshua muaj thermal expansion, thiab zoo heev damping muaj peev xwm.Txawm li cas los xij, zoo li txhua yam khoom siv, lawv tsis zoo tag nrho thiab tej zaum yuav muaj som ...
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