结论:拖沓的产生与许多认知因素有关.The occurrence of procrastination is correlated with many cognitive factors.因此, 不要对穿着宽大拖沓的裤子太过于认真了哦.Certainly , the baggy trousers can't be taken too seriously.将绘图打印出来并通过拖沓的邮政系统将其邮寄出去.Print the dra...
线已经绕成球了.The threads are wound into a ball.那小孩把泥捏成球.The child shaped clay into balls.我们变换成球极坐标.We carry out a transformation to spherical polar coordinates....
以二羧酸和异丁醇为原料,用硫酸作催化剂,合成二羧酸二异丁酯.The diisobutyl dicarboxylate was prepared by using acid and isobutanol as material and acid as catalyst.以冰醋酸、异丁醇为原料,硫酸高铈为催化剂合成乙酸异丁酯.A method for synthesis of isobutyl acetate based on ceric ...