上周这个镇上被马戏团的宣传员贴满了广告.The town was thoroughly billed by the agents of the circus last week.她是个公共关系事务所的宣传员.She is a hype artist for a public relations firm.预防爱滋病的宣传员濮存昕以及学校有关领导在会上发言.Pu Cunxin, the foremost advocate of AIDS ...
The rocks are disintegrated by frost and rain.风霜雨露使岩石分化.It can be used for devising systems to protect against frost damage.它可用来设计防止霜害的方法.Just before the frost farmers everywhere rushed to give the land a good watering.就...
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.According to Mechanics theory the formulary of flexural rigidity, axial rigidity, shearing rigidity a...