含碳的铌合金,若在高温下受氧沾污,易产生脱碳现象.In niobium alloy containing carbon occurs decarburization in case of contamination by oxygen at higher temperature.含%碳的钢(铁碳混合物的低共熔点),含%碳的碳钢是纯珠光体.A mixture of ferrite cementite forming distinct la...
Our range of herbal teas contain no preservatives, colourings or artificial flavourings.我们这一系列的药草茶不含防腐剂、色素以及人工调味品。Glass bottles are filled with water tinted with food colourings.玻璃瓶中盛满了被食用色素染过色的水。...