越南战场上用于毁灭林区的“橙剂”，其成分是二氧杂芑。Dioxin was the ingredient in Agent Orange, used to defoliate Vietnam.所形成的水解反应物是二盐酸甲撑二氧胺.The resultant hydrolytic reaction product is methylenedioxyamine dihydrochloride.后者是由二氧杂环戊烷中活化较弱的C -H 键离解而...
That leads to biquadratic equations for solution.它们又引出待解的双二次方程.The global topological structure of the biquadratic systems is discussed and their coefficient conditions are given.讨论了一类齐四次系统的全局结构,并给出了它们的系数条件.In this paper...
The nuclei are large, irregular, hyperchromatic, and show prominent nucleoli.细胞核大 、 不规则 、 核浓染, 核仁清晰明显.However , the neoplastic cells show pleomorphism, with hyperchromatic nuclei.肿瘤细胞的多形性明显, 细胞核深染.The atrophic glands hav...