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...
The whole project is imperilled by lack of funds.整个工程因缺少资金而陷于危险之中.You imperilled the lives of other road users by your driving.你的驾驶危及了其他路人的生命安全。You have already imperilled the whole success of our expedition.你已经使我们取得这次远征...
本文以紫坪铺水利枢纽工程引水发电洞进水口边坡为研究对象.This paper takes the water - intake slope as the research object.现在我们得把水渠的进水口关上了.Now we must shut off the in - flow of the canal.对于河床 式 厂房, 下部结构中还包括进水口结构.The bed - plant, the structure also in...