| 释义 |
碳的
基本例句
carbonouscarboniccarbonaceouscarbolic
放射性碳碳的一种放射性同位素，尤指碳14A radioactive isotope of carbon, especially carbon14.
碳化作用烟煤的分解蒸馏，在没有空气的条件下进行，为得到比最初的原料所含碳的百分比大得多的焦煤以及其它馏分The destructive distillation of bituminous coal, done in the absence of air in order to obtain coke and other fractions having a greater percentage of carbon than the original material.
碳的化合价是四价。Carbon has a valence of four. |