Higher order functional differential equations of the form Lnx(t)+σN(Σ)h=1qh(t)fh(x(Δh(t,x(t))))=0 are considered, where n≥2, σ=±1 and the deviating arguments Δh, 1≤h≤N depend on the independent variable t as well as on the unknown function x.Sufficient conditions are found under which the abovementioned equations are oscillatory or almost oscillatory.Results obtained improve and extend those in the literature [1].%考虑高阶泛函微分方程Lnx(t)+σN(Σ)h=1qh(t)fh(x(Δh(t,x(t))))=0,其中n≥2,σ=±1,偏差变元Δh(1≤h≤N),依赖于独立变量t和未知函数x.建立了该方程振动和几乎振动的若干充分条件,本文结果改进和推广了文献[1]中的相关结果.
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