Carbonyls羰基化合物carbonn.碳；复写纸；复本；碳精棒Carbonization technology processing碳化工艺过程carbon-nitriding heat-treatment碳氮共渗carbon -coated iron nanoparticles碳包铁纳米粒子Carbon dioxide extinguishing system二氧化碳灭火系统carbon-fiber reinforced composite碳-纤维增强复合材料carbonized petiole of windmill palm棕榈炭carbon oxygen ratio spectra logging碳氧比能谱测井carbon dioxide diffusion resistance抗二氧化碳扩散性carbon-graphite impregnated resin浸渍碳石墨树脂carbon steel seamless pressure tube碳素钢无缝压力管