更多ester例句

1. The researchers linked many parts of the molecules together with what are known as “ester groups.”
2. It was then thought that perhaps the oil could be converted into an ester which might be more volatile and could be distilled out.
3. The ester solution was then put in a vacuum desiccator over sulphuric acid and the alcohol evaporated.
4. A black tar-like solid was left very much like the original material, but it had the ester odor.
5. A mixture of the two esters melted within the limits given for the ester of gallic acid.
6. The ether, on evaporation, left the ester which was crystallized from water and dried in a desiccator over sulphuric acid.