keystones

英 [ˈkiːstəʊnz]

美 [ˈkiˌstoʊnz]

n.  拱顶石; (计划、论据的)主旨，基础
keystone的复数

柯林斯词典

• 拱顶石
  Akeystoneis a stone at the top of an arch, which keeps the other stones in place by its weight and position.
• N-COUNT （政策、体系或进程的）基础，主旨
  Akeystone ofa policy, system, or process is an important part of it, which is the basis for later developments.
  1. Keeping inflation low is the keystone of their economic policy.
     将通货膨胀率保持在较低水平是他们经济政策的主旨。

双语例句

• Introduced general situation of city agriculture in Hangzhou, explored the keystones and service model of agro-mechanization in city agriculture, put forward 6 sides of work to be done well in the future.
  介绍了杭州都市农业发展规划概况，指出要正确定位农机化在服务都市农业中的重点，探索了农机化在都市农业中的服务模式，提出今后农机化服务都市农业要做好6个方面的工作。
• In this thesis the architecture arrangement follows the software engineering, firstly the system requirement is analysed, then the system architecture is designed, the particularize design shows the detail logic in the system, in the end some keystones in programming is listed.
  本文从软件工程的角度安排文章结构，先对系统进行需求分析，接下来进行系统总体架构的设计，通过详细设计给出系统具体的实现逻辑，接着对系统实现过程中重点问题进行了讲解。
• The environmental appraisal of construction projects has two system and environment management have two keystones in our country for a long time.
  长期以来，我国对建设项目实行环境影响评价和三同时两项制度，建设项目环境管理工作有环保审批和竣工验收两个重点。
• The mensuration and calculation of transpiration and evaporation of plants are now the keystones in plant physiology.
  植物的蒸腾与蒸发（蒸散）速率的测定和计算方法是目前植物生理生态学的研究重点，但目前的常规方法，都无法区分蒸腾与蒸发。
• This paper utilizes the contrast research and the general character research to lay a strong emphasis on discussing these two works backgrounds, writing techniques, and performance keystones.
  本文同时运用对比研究和共性研究，重点探讨了这两部作品的有关创作背景资料、具体创作手法与演奏要点这三个方面。
• In this text, I attempt to find out the keystones of the operational management of multinational and then make some analysis about them, in order that these can have use for reference to the operational management of multinational.
  本文尝试找出跨国公司的运营管理的重点，并对这些重点进行分析，使之对跨国公司的经营管理有借鉴作用。
• The research keystones of copper electroless plating were presented.
  提出了化学镀铜今后的研究重点。
• Government information integration and sharing is one of the keystones in e-government development.
  政务信息的集成共享是电子政务系统发展的重点之一。
• The keystones and difficulties for every chapter are proposed, and the testing system is constructed in the courseware.
  此课件总结了各章的重点内容和难点内容，并建立了自测系统，为学生学习和掌握本门课程提供了较好的条件。
• The rapid development of China economy raises higher requirements and challenges on the demanding of financing concerning railway construction and railway transportation equipment. Therefore, the promotion of railway investment and financing reform becomes one of the keystones for China Railways.
  我国经济的快速发展对铁路建设和铁路运输装备的融资需求提出了更高的要求和挑战，推进铁路投融资体制改革成为我国铁路的一项重点任务。