focal ratio

常見例句

• The baker Super-Schmidt camera can operate with extremely low focal ratios.
  Baker超施密特照相機則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，沒一個生產(chǎn)高質(zhì)量短焦比的廠家，都會使用反射結(jié)構(gòu)的天頂；
• In the situation of different energy input, models are calculated.The thermoelectric generating parameters are obtained with the changes of focalizing ratio.
  并對不同輸入能量的情況進行了計算，得出了熱電性能參數(shù)隨聚光比的變化規(guī)律。
• The focal point of our discussion was the need for action.
  我們討論的中心是采取行動的必要性。
• The ratio of students to teachers is 35:1.
  學生和老師的比率是三十五比一。
• The ratio of schoolboys to schoolgirls is 2 to 1.
  男學生和女學生的比例是2比1。
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