在搜集了有关情况后,他们说照片是伪造的。They said, after digging around, the photo was a fake.威廉斯插入了许多伪造的素材。Williams interpolated much spurious matter.你觉察到这些钞票是伪造的吗?Are you aware these notes are counterfeit?...
本文论述了利用混合溶剂——结晶法提纯除虫脲的分析技术.The method was established for purification of diflubenzuron by crystal technique with mixed solvents.通过反相液相色谱方法往甲醇与水的混合流动相中加入适当调节剂,分离和测定除虫脲原药中的主要杂质.The separation and determination of the prim...