OBJECTIVE: To evaluate the clinical efficacy of the "open sandwich" with flowable composite technique in wedge-shaped defect restoration.

目的：本实验评价流动树脂开放式夹层技术充填楔状缺损的临床有效性。

A hamburger (or burger) is a sandwich consisting of a cooked Patty of ground meat, usually beef, placed in an open bun or between two slices of bread.

汉堡包(或称汉堡)是一种夹了一块碎肉馅的三明治，通'常是将牛肉放在一片小圆面包上或夹在两片面包之间。

According to the constitution of the open web sandwich plate, two models of finite element analysis using plate shell, block and beam element are given.

根据空腹夹层板的构造特点，提出了空腹夹层板有限元分析的两种计算模型。

The heat preservation and insulation performance and the improvement of construction technologies of open-web sandwich structure are mainly studied in this article.

本文主要是研究空腹夹层结构的保温隔热性能和施工工艺改进。

This paper pressets the reinforced concrete open-web sandwich plate and the fishy bone open-web sandwich plate in the floor structure system in multistorey and tall buildings.

本文介绍两类多层与高层建筑钢筋砼楼盖结构体系——空腹夹层板与鱼骨式空腹夹层板。