go top

f ratio

  • n. 方差比; F 值

网络释义专业释义英英释义

  焦比

不单是这原因, 还要降低焦比(F-ratio), 如SCT用6.3减焦镜, 焦比由10变为6.3, 那原本要曝光两分半钟才见得到的天体, 现在曝光不足1分钟便可见得到。

基于20个网页-相关网页

短语

f ratio 方差比

maximum F-ratio 最大F比

modified F ratio 改良F波比率

Two-level F-ratio 二阶F比

high f ratio oligo-peptide 高f值寡肽

high f ratio 高f值

substitute F-ratio 替代F比例

theoretical a-f ratio 理论空燃比

fast f-ratio aspheric mirror 大口径强光力非球面

 更多收起网络短语
  • f比值
    变方比

·2,447,543篇论文数据,部分数据来源于NoteExpress

F-ratio

  • abstract: In oceanic biogeochemistry, the f-ratio is the fraction of total primary production fuelled by nitrate (as opposed to that fuelled by other nitrogen compounds such as ammonium). This fraction is significant because it is assumed to be directly related to the sinking (export) flux of organic marine snow from the surface ocean by the biological pump.

以上来源于: WordNet

双语例句

  • For example, the focal length of an 8" (203.2mm) aperture with a focal ratio of f/10 would be 203.2 x 10 = 2032mm.

    比如,孔径为8英寸(203.2mm),焦比为f/10的透镜,其焦距为203.2 x 10 = 2032mm。

    youdao

  • Only some parameters such as theoretical A/F ratio and modified coefficients of sub models needed to modify little, when simulating the characteristics of engine using different gas.

    当燃用不同的燃气时,只需对其中的一些参量(如理论空燃比等)及子模型的修正系数进行微调即可。

    youdao

  • CONCLUSIONS: Characteristics that distinguish elderly from younger HCC patients include lower M/F ratio, worse performance status, lower rate of HCV infection, and less advanced underlying cirrhosis.

    结论: 年长组区别于年轻组HCC患者的特征包括较低的M/F比率、更差的体力状态、较低的HCV感染率以及较少进展的肝硬化。

    youdao

更多双语例句
$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定