例句與造句

1. as far as model is concerned, the forth generation software should be characterized with spatial entity-oriented . the paper established the geographic spatial model based on the thinking of object-oriented; studied the structure of the model " s elementary unit-- geographic entity; brought forward the concept of geometric data type which characterize entity's spatial feature in the structure; defined five kinds of geometric data types such as point, arc, area, composite arc, composite area; and formalized their collective operation using hypergraph . at the end of this paper writer studied preliminarily the method of entity query and analysis based on the model
   本論文從面向?qū)ο蟮幕舅枷氤霭l(fā)，建立了面向?qū)ο蟮牡乩砜臻g模型；研究了地理空間模型中的基本單位??地理實體的結(jié)構(gòu)，針對實體結(jié)構(gòu)中用來表征實體空間特性的組成部分??幾何對象，提出了其取值范圍，即幾何數(shù)據(jù)類型的概念；對點、弧、面、復(fù)合弧和組合面五種幾何數(shù)據(jù)類型進(jìn)行了定義；并使用超圖工具對幾何數(shù)據(jù)類型的集合操作進(jìn)行了形式化描述；對基于面向?qū)ο蟮牡乩砜臻g模型的實體查詢和分析方法也做了初步研究。
2. It's difficult to find composite area in a sentence. 用composite area造句挺難的