Four novel1, 8 naphthalimide derivants were synthesized and their absorption spectra and fluorescence spectra in chloroform were investigated.
合成了四种具有推拉电子结构的1, 8萘酰胺衍生物。

A new extracting agent of piperidine derivant was synthesized.
合成了一种新萃取剂哌啶多氮衍生物。

Application of Calixarenes and Its Derivant in Chromatographic Fractionation
杯芳烃及其衍生物在色谱分离中的应用

A description is made of the sources, chemical composition and physicochemical properties of rosin and its derivant.
介绍了松香的来源、化学组成及理化性质。

Dampening vibrator Amerivan term. See Damping distributor.
分布水辘英文是美国术语。

Treatment of dyestuff wastewater containing nitrobenzene and its derivants.
含硝基苯类衍生物的废水处理