The yield of chlorination was 92.8 % , using phosphorus oxychloride as the chlorinating agent.在氯化反应中, 以三氯氧磷为氯化剂,产率为92.8%.In the reaction of chlorination, carbon tetrachloride was used agent, and chlorine gas as chlorinat...
Tears are signs of gladness as well as of grief.眼泪标志着悲伤,同样也标志着快乐.We behold the face of nature bright with gladness.我们常常从光明、愉快的方面去看自然界的外貌.Gladness surged through Pamela to hear of the torn - up letters.听着信件的撕碎声,帕米拉胸中涌起了一阵...