1. In this paper the deforming features of drawing circular cup from square blank are analyzed and the comparative experiment is carried out between square blank and circular blank. 本文分析了方坯拉深圆筒形件时的变形特点，并进行了对比试验研究。
2. The drawing die structure of shirt oil bottom shell is introduced, the surrounding border of shirt oil bottom shell needs to be drawn at concave die and blank holder. 介绍了在冲孔落料后用可滑动折弯凹模与可滑动折弯凸模相结合对薄片形件进行弯边，模具结构简单、巧妙，对同类产品具有一定的借鉴作用。
3. The development and improvement of terminal guided projectile are introduced, which includes terminal guided howitzer shell, terminal guided mortar shell and extended-range shell of naval gun. 针对末制导炮弹、末制导迫弹以及舰炮发射的制导炮弹，介绍了它们的发展历史及改进情况。
4. Both equal to the size of the shell, Chien-Hou was oval, shell-shaped face has Walloon radiation rib, thin skin was brown, white shell surface. 两壳大小相等，坚厚呈卵圆形，壳面有瓦龙状放射肋，被褐色薄皮，壳内面白色。
5. Bivalve and gastropoda are the main species building up the shell ridge, of which the content of shell is more than 95%. This is rarely compared with other shell rigs in the world. 通过贝壳种属调查发现贝壳滩脊的主要组成物质是生活在潮间带和潮下带的腹足类和瓣鳃类壳体，属于近源堆积，贝壳物质含量高达95％以上。
网络释义
picture in carved shell sea-shell carving shell picture 贝雕画;
picture in carved shell sea-shell carving shell picture 贝雕画;
picture in carved shell sea-shell carving shell picture 贝雕画;
picture in carved shell sea-shell carving shell picture 贝雕画;
