manganese vanadium steel 中文意思是什麼
manganese vanadium steel
解釋
錳釩鋼-
Manganese vanadium tool steel
錳礬工具鋼 -
Standard specification for pressure vessel plates, alloy steel, manganese - vanadium - nickel
壓力容器用錳釩鎳合金鋼板標準規范
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