n.四亚甲基
网络 环丁烷; 四亚甲基; 四甲撑
Methods The cure for 29 patients who were diagnosed Tetramethylene Poisoning was retrospectively analyzed, the suitable project of diagnosis and treatment were studied out.
方法对29例确诊为毒鼠强中毒的病人救治进行回顾性分析,拟定合适的诊治方案。
Three photochromic N, N´-1,4-tetramethylene bisspiropyran and bisspirooxazine compounds were synthesized. They have been identified by IR spectra, 1H -NMR spectra and elemental analysis;
合成三种N,N'-1,4-亚丁基双螺吡喃和双螺恶嗪光致变色化合物,通过红外光谱、核磁共振氢谱及元素分析确证其结构。