Kev Siv: Cov cuab yeej siv dav siv rau cua sov hauv tsev kawm ntawv chav kuaj, kev lag luam thiab mining, kev ua zaub mov, biochemistry, kev ua liaj ua teb, petrochemicals engineering thiab kev lag luam tshuaj rau cov kua.Yam ntxwv: 1. Txias dov daim ntawv stretching thiab txau sab nrauv.2. Electronic...
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