- keystone
 - ['ki:stəun]
 - n. 主旨,基本原则;[建]楔石
 
参考例子
           - 1.Advancing suburban assurance is the difficulty and keystone of domestic insurance enterprise.
 - 发展农村保险是我国保险业发展的难点和重点。
 
- 2.The keystone of the article is analyzing industry structure of He Bei, analyzing industry from whole angle.
 - 本文的重点是对河北省产业结构的分析,从整体的角度来分析河北省产业情况。
 
- 3.Stating the function and usage of Keystone slotted pipes, Keystone slots manufacturing method by laser reliability of Keystone manufacturing method by laser.
 - 简述了梯形缝筛管的作用、用途及激光加工梯形缝的方法和激光加工梯形缝筛管的可靠性。
 
英文解释
           - n.
 - 1.a central cohesive source of support and stability
 - 2.the central building block at the top of an arch or vault
 
网络释义
               - keystone
 - 阶梯型变型; 凯斯通牌照相机; 关键; 梯形畸变;
 
- keystone fault
 - 拱楔断层; 穹顶断层; 穹顶断层,拱顶断层;
 
- keystone slot
 - 梯形割缝;
 
- keystone correction
 - 梯形失真校正; 梯形失真调节; 梯形畸变校正,梯形失真校正; 梯形畸变校正;
 
- auto keystone
 - 自动梯形校正; 全自动梯形修正; 自动梯形校正键;