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columbium n.〔廢語〕【化學】鈮〔現名 niobium〕。

columbus

Specification for steel , sheet and strip , heavy thickness coils , hot rolled , carbon , structural , high - strength low - alloy , columbium or vanadium , and high - strength low - alloy with improved formability 片鋼和帶鋼厚卷材熱軋高強度低合金結構碳鋼以及改良可模塑高強度鈳或釩低合金鋼規范

Standard specification for pressure vessel plates , low - carbon age - hardening nickel - copper - chromium - molybdenum - columbium and nickel - copper - manganese - molybdenum - columbium alloy steel 壓力容器用低碳時效硬化的鎳銅鉻鉬鈮和鎳銅錳鉬鈮合金鋼板的標準規范

Standard specification for pressure vessel plates , low - carbon manganese - molybdenum - columbium alloy steel , for moderate and lower temperature service 中溫和低溫壓力容器用低碳錳鉬鈳合金鋼板的標準規范

Standard specification for nickel - chromium - molybdenum - columbium alloys uns n06625 and nickel - chromium - molybdenum - silicon alloy uns n06219 pipe and tube 鎳鉻鉬鈳合金管和鎳鉻鉬硅合金管道的標準規范

Standard specification for precipitation - strengthened low - carbon nickel - copper - chromium - molybdenum - columbium alloy structural steel plates 沉淀硬化低碳鎳-銅-鉻-鉬-鈮合金結構鋼板的標準規范

Standard specification for nickel - iron - chromium - molybdenum - columbium stabilized alloy uns n08700 plate , sheet , and strip 鎳鐵鉻鉬鈳穩定合金板薄板及帶材標準規范

Specification for nickel - iron - chromium - molybdenum - columbium stabilized alloy uns n08700 bar and wire 穩定的鎳鐵鉻鉬鈮合金棒材及線材規范