focal ratio

同根派生

英汉例句

• The baker Super-Schmidt camera can operate with extremely low focal ratios.
  Baker超施密特照相机则能以非常低的焦比工作。
• If you notice, every manufacturer of quality scopes with fast focal ratios uses mirror diagonals.
  如果你注意一些，没一个生产高质量短焦比的厂家，都会使用反射结构的天顶；
• In the situation of different energy input, models are calculated.The thermoelectric generating parameters are obtained with the changes of focalizing ratio.
  并对不同输入能量的情况进行了计算，得出了热电性能参数随聚光比的变化规律。
• The focal point of our discussion was the need for action.
  我们讨论的中心是采取行动的必要性。
• The ratio of students to teachers is 35:1.
  学生和老师的比率是三十五比一。