研究了用无溶剂重结晶法提纯2,6二氯甲苯.Purification of 2,6 dichlorotoluene by the recrystallization method without solvent was studied.以对氯甲苯为原料,经氯化、水解反应合成对氯苯甲酰氯,总收率. 6%.%.The total yield and 4 - chlorohenzoyl chloride. 6 % and. %.研究炭管采集空气...
他的投球在大联盟的击球员中是个传奇。His pitching was a legend among major league hitters.我干脆利落地击球，命中了目标。I struck the ball cleanly and my shot was on target.这位19岁的佐治亚州人并不是比赛中的优秀击球手之一。The Georgian, aged 19, is not one of the game's big...
Suddenly he felt the fresh and sharp night air and he knew that the mistral was blowing.突然间，他呼吸到了夜晚新鲜寒冷的空气，他知道这是寒冷干燥的强风。Along the Rh ? ne Valley, occasional strong , cold , dry , north - to - northwesterly wind known as ...