The cyclopentadiene is prepared by the thermal cracking of dicyclopentadiene.以热裂解双环戊二烯的方法制备环戊二烯.A flexural oscillation model about V - shaped silicon electro thermal microactuator is presented.提出了V型电热硅微致动器的弯曲振动力学模型.To re...
Most plants propagate by seeds.大多数植物都是通过种子繁殖的.Insects propagate themselves by means of eggs.昆虫以产卵繁殖后代.Rabbits propagate [ breed ] rapidly.兔子 繁殖 迅速.Propagate system is integrative , various kinds of medias cannot isolated...