She typed an original and two carbons.她用打字机打出了原件及两份副本.He inserted the paper and two carbons.他放入了那张纸和两张复写纸。Isolable carbocyclic compounds contain seven or fewer carbons in the cycle.可分离的碳环化合物环内含七个或七个以下的碳....
Ordered mesoporous carbons possess good conductivity, strong framework and high surface areas , showing great adsorptioncatalysis.介孔碳材料具有良好的导电性 、 很强的骨架刚性以及大的比表面积.He inserted the paper and two carbons.他放入了那张纸和两张复写纸。The va...
他们通过无线电证实她在营救幸存者。They confirmed by wireless that she was picking up survivors.营救人员仍在艰难地向被困者靠拢。Rescuers were still working their way towards the trapped men.那个23岁女孩的尖叫引来了一位过路人前去营救。The 23-year-old's screams alerted a ...
A mile more of rusty pine needles brilliant with gaudy fungus and molted feathers.接下来的一里路，地上铺着锈朽的松针，点缀着艳丽的菇子和鸟类换掉的羽毛。Aril rusty and polish when ripe.假种皮红色,熟时有光泽.A thin curl of smoke rose from a rusty stove.生锈的炉子里冒出一缕青烟。I...