領頭項在数学方程式、表达式或模型中的领头项(Leading-order term)是数量级最大的項(英语:Term (logic))。随着变量的变化,方程中不同项的大小也将发生变化,因此,哪些项是领头项也可能发生变化。 J.K.Hunter, Asymptotic Analysis and Singular Perturbation Theory
古代罗马大地产制土地。格拉古兄弟改革期間曾限制占有公有地,這時期大地产制的发展一度受阻。不過2至5世纪地中海地区主要的土地所有制形式依舊是大地产制。 The singular *latifundium occurs but once (in Pliny's Natural History 13.92, with the
单数theyBryan A. Garner, the recommendations are: "The singular they. A singular antecedent requires a singular referent pronoun. Because he is no longer accepted
潜在语义学(页面存档备份,存于互联网档案馆) Matthew Brand (2006). "Fast Low-Rank Modifications of the Thin Singular Value Decomposition" (PDF). Linear Algebra and Its Applications 415: 20–30
人類滅絕Praxis, 2009. ISBN 978-0387098364 Tonn, Bruce, and Donald MacGregor. "A singular chain of events (页面存档备份,存于互联网档案馆)". Futures 41.10 (2009): 706-714. Malik