Purification of 2,6 dichlorotoluene by the recrystallization method without solvent was studied.研究了用无溶剂重结晶法提纯2,6二氯甲苯.Taking p chlorotoluene as raw material , 2,4 Dichlorotoluene was synthesized via catalytic chlorination...
Iran remains an enigma for the outside world.对于外界而言，伊朗仍是个谜。Iran reopened its embassy in London.伊朗在伦敦重开使馆。Jim has been sent to Iran to report on the situation there.吉姆已被派往伊朗报道那里的局势....
只有现有储户的孩子可以开立账户.Only children whose parents are existing savers may open an account.在清算银行中,储户具有举足轻重的地位.Depositors are of special importance in the clearing banks.它们为银行储户提供24小时服务.They provide bank customers with 24 - hour...
I thought the magical reindeer made The sleighs fly.不是魔法驯鹿让雪橇扶摇直上的吗?The life of the Reindeer men was a frontier life.驯鹿时代人的生活是一种边区生活.I heard a clunk on the roof. Must be the reindeer.我听到屋顶上有声音. 肯定是驯鹿在屋顶上.The herd of rein...