...the sound of a spoon scooping dog food out of a can.用勺子从罐子里舀狗粮的声音The scoop - up was the key phase during a scooping cycle.3个区间中,铲取区间是整个作业循环的关键.Heated ice cream scoop is used for scooping really cold ice cream.加热的冰淇淋勺是...
The carbon is electrophilic centre.碳是亲电的中心.It will become deepen to the students'recognization in mechanism of Aryl electrophilic substitution.这些问题的讨论将深化学生对芳烃亲电取代反应机理的认识.The rate constants of radical and electrophil...