| 1. | The resulting ground crystals were packed in straws .
将所制得的结晶经研碎装入汽水管中。 |
| 2. | Nitrosophenols are formed very easily by the action of nitrous acid on phenols .
以亚硝酸作用于酚，很易制得亚硝基酚。 |
| 3. | Furnace acid is made by reducing phosphate rock with loke in an electric furnace .
炉酸是在电炉中用焦炭还原磷矿制得的。 |
| 4. | In reality, readily characterizable high polymers are formed only from aliphatic aldehydes rcho .
事实上有代表性的高聚物仅仅是由脂肪醛RCHO制得的。 |
| 5. | The scheme initially involves acylation of thiophene using a carboxylic acid to afford the acyl thiophene .
这条路线是先用羧酸使噻吩已酰化制得酸基噻吩。 |
| 6. | The yields of aldehydes produced in this sequential process are comparable to the two-step method .
用此法制得的醛，其产率与用两步法可制得的产率不相上下。 |
| 7. | Suitable choice of monomers and synthetic routes can yield linear copolymers in which the monomer units alternate .
选择适当的单体和合成路线，能够制得单体单元交替排列的线型共聚物。 |
| 8. | Perfluoroguanidine can be prepared by the direct fluorination of dry ammeline with 5% fluorine at about－16℃.
全氟胍可以由干的三聚氰酰胺，用5的氟，在约16直接进行氟化而制得。 |
| 9. | a weak phosphoric acid made from florida rock containing 25% f gives a 54% acid containing 0. 4f.
用佛罗里达矿石制得的稀酸（含F25）可以浓缩成含F04的54酸。 |
| 10. | perfluoroguanidine can be prepared by the direct fluorination of dry ammeline with 5% fluorine at about -16℃.
全氟胍可以由于的三聚氰酰胺，用5的氟在约16直接进行氟化制得。 |
