Free vibration response of functionally graded material(FGM) beams is studied based on the Levinson beam theory(LBT). Eq......

An indispensable part to Grice’s system, the notion of cooperation is relevant to translation in many ways. With regard......

<正> 一九七八年,英国学者Brown和Levinson发表了一篇题为《语言应用的普遍现象:礼貌现象》("Universals in language usage:Polit......