摘要: The most general and simple theory intended to fit liquid solid solutions is the regular solution developed by vanLaar Lorenz (1925), Heitler (1926), Hildebrand (1928). term was proposed (1929) for described random yet nonideal behavior. This behavior properly called zeroth approximation Guggenheim,1 as distinct from first approximation, be discussed later in this chapter. Early developments field are presented a number of publications.1–3