carbons碳质物carbonn.碳；复写纸；复本；碳精棒carbon noise炭质电阻噪音,碳粒噪声,碳质电阻噪音carbon cycle碳氮循环,碳素循环,碳化循环,碳循环carbon prism碳棱柱体carbon sinks增汇Carbon beads碳微球carbon alloy碳合金carbonaceousadj.碳的；碳质的；含碳的carbonitrile[化]腈carbon blackn.炭黑；黑烟末carbon ratio碳比