order of magnitude

英 [ˌɔːdər əv ˈmæɡnɪtjuːd]

美 [ˌɔːrdər əv ˈmæɡnɪtuːd]

n.  数量级(量度物理量大小的标准，用以10为底的指数表达)

计算机

牛津词典

noun

• 数量级（量度物理量大小的标准，用以10为底的指数表达）
  a level in a system of ordering things by size or amount, where each level is higher by a factor of ten
  1. The actual measurement is two orders of magnitude (= a hundred times) greater than we expected.
     实际测量结果比我们预料的大两个量级（即一百倍）。
  2. The problem is of the same order of magnitude for all concerned.
     这个问题对有关各方的影响是一样大的。

英英释义

noun

• a degree in a continuum of size or quantity
  1. it was on the order of a mile
  2. an explosion of a low order of magnitude
  Synonym:order
• a number assigned to the ratio of two quantities
  Synonym:magnitude

双语例句

• In troposcatter transmission it turns out that M is of the order of magnitude of100 to1000.
  在对流层散射通讯中已证明M在100到1000的数量级。
• Other witnesses have reported numbers of a similar order of magnitude.
  其他见证者报告的数量级类似。
• A good framework can reduce the cost of developing an application by an order of magnitude.
  一个好的框架可大大降低应用系统的开发成本。
• Most software projects have requirements backlogs that are too big& often by an order of magnitude.
  大多数软件项目都有庞大的需求积压&通常按照数量级进行排列。
• During pre-concept phase, the development team provides a rough order of magnitude ( ROM) for proposed release content and ( not committed) target dates.
  在制定概念前阶段，开发团队提供粗数量级（ROM）的提议发布内容和（未确定的）目标日期。
• For a commercial software product, the Business Case should include a set of assumptions about the project and the order of magnitude return on investment ( ROI) if those assumptions are true.
  对一个商业软件产品来说，商业案例应该包括一组关于项目和投资收益（ROI）的数量级的假设。
• JBind performs a full order of magnitude slower than most of the binding frameworks in these tests.
  相对于这些测试中的大多数绑定框架，JBind的执行速度慢了整整一个数量级。
• The gravimetric hydrogen production rate exceeds that of other solar-driven thermochemical processes by more than an order of magnitude.
  而分解出氢的效率以重量计算可比其它太阳能热制程的效率高出一个数量级。
• When auxiliary heaters are turned on the chamber pressure may rise by an order of magnitude or more.
  当辅助加热器接近燃烧室工作时，压强就可能上升一个数量级或更多。
• The raw material concentration is one order of magnitude lower than the concentration in the traditional fixed state process.
  原料浓度比传统定态过程低一个数量级。