Under the optimum condition the yield of isopropyl cyclopropane carboxylate is 92 %.在最佳反应条件下,环丙烷羧酸异丙酯的产率达92%.Isopropyl p - hydroxybenzoate was synthesized with toluene - p - sulfonic acid as catalyst.以对 甲苯 磺酸为催化剂合成了尼泊金异丙...
Southwest phoenix You Shan, fabulous Feng Aoxiang having celestial being hereat and renown.西南的凤游山, 传说有仙凤翱翔于此而名.With the cultural dissemination, other ethnic groups in west Asia and southwest Asia adopted cuneiform.楔形文字传播...
他们只好用烟熏温室里的植物.They had to smoke the plants in a greenhouse.你干吗不试着用烟熏死虫子 呢 ?Why did not you try to smoke the insects?那个男人被发现患有传染病, 因此他的房子必须用烟熏来消毒.The man was found to have an infectious disease, so his house had to be fum...