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...
...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...
我留下一名中士指挥，自己策马前去侦察敌情。I left a sergeant in command and rode forward to reconnoitre.突然, 他们发现 敌情.一支优势日军正向他们逼近.Suddenly, they an approaching Imperial Japanese Army ( IJA ) force .最高层处设有了望台,以便了解敌情.The highest level is observa...