... large-aperture antenna 大孔径天线 Large relative aperture 大相对孔径 large-aperture photoconductive antenna 大孔径光导天线 ...
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...清镜头价格现货：型号 XA18x7.6BERM 焦距 1 ×7.6 - 137 mm 2 ×15.2 - 274 mm 变焦倍率 18 × 内置扩展镜 2 × 最大相对孔径（F-No.） 1 : 1.8 (7.6 - 102 mm) 1 : 2.4 (137 mm) 最小物距（M.O.D.,从最前镜头起） 0.6 m 拍摄范围（M.O.D.
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It is a key step of manufacturing the large relative aperture aspherical surface to make a breakthrough at the technology.
突破这一技术是研制大相对孔径非球面的关键环节。
参考来源 - 大相对孔径无焦非球面系统检测方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
突破这一技术是研制大相对孔径非球面的关键环节。
It is a key step of manufacturing the large relative aperture aspherical surface to make a breakthrough at the technology.
介绍了一种大相对孔径、大视场微光夜视系统的设计方法。
Method design of low light level night vision optical system with wide field view and large relative was described.
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。
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.
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