| 1. | Wood charcoal contains up to 98% carbon .
木炭含有相当于98的碳。 |
| 2. | All living things contain radiocarbon .
所有生物都含有放射性碳。 |
| 3. | Diamond is a third form of solid carbon .
金刚石则是第三种形式的固态碳。 |
| 4. | Such a carbon is designated as a chiral carbon .
这样的碳原子称为手性碳。 |
| 5. | The residue is progressively enriched in carbon .
残留部分愈来愈富含碳质。 |
| 6. | Most manufacturers use a charcoal canister .
大多数厂商都使用活性碳收集器。 |
| 7. | The anions produced are carbanions .
由此而产生的负离子，人们称之为碳负离子。 |
| 8. | In soot the atoms have no regular arrangement .
在煤烟中，碳原子呈无规则排列。 |
| 9. | The carbene also reacts with alcohols .
碳烯也可与醇反应。 |
| 10. | Every carbon atom has four bonds .
每个碳原子的价键为四。 |
