carbonete碳酸盐岩carbonn.碳；复写纸；复本；碳精棒carbon based manganese dioxide碳载二氧化锰carbon film hygrometer element碳膜湿度计元件Carbon and alloy flat products普通碳素和合金板材carbon monoxide sorption curve一氧化碳吸着曲线Carbon tax and carbon emission碳税与碳排放carbon granules clearance test碳粒廓清实验Carbon materials for fuel cell燃料电池用炭材料carbon dioxide and agriculture二氧化碳与农业carbon tissue transfer machine碳素纸过版机carbon steel covered electrode碳钢焊条