During the day the lower limit is about 8 to 10 times the aperture.
白天时的下限是孔径的8到10倍。
In optimized design, damped least squares method and adaptive procedure are used to get higher relative aperture, lower distortion and appropriate MTF, and so on.
在光学系统优化设计的过程中，应用阻尼最小二乘法和适应法解决了大相对孔径、低畸变和MTF匹配等问题。
The study of oxide-aperture influence on threshold current and differential resistance shows that lower threshold current can be obtained with a smaller oxide-aperture diameter.
研究了氧化孔径对阈值电流和微分电阻的影响，结果表明较小的氧化孔径可以获得低的阈值电流。
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