The beef extract, a beef derivative, is a source of organic carbon, nitrogen, vitamins, and inorganic salts.
牛肉萃取物是一种牛肉衍生制品，可以作为有机碳、氮、维生素与无机盐类的一个来源。
2
Progress in the research on adsorptive characteristic of chitosan and its derivative with heavy metal ions, acid and organic dyestuff etc was reviewed in this paper.
综述了壳聚糖及其衍生物对重金属离子、酸和有机染料等吸附特性的研究进展。
3
An anthracene derivative represented by a general formula (1) and an organic compound represented by a general formula (17) are provided.