If star trails are desired, using a large aperture and higher sensitivity (ISO 200-400) can enhance the brightness of each streak.
如果需要星光轨迹，那么使用大光圈和较高感光度(ISO 200- 400)就能提高每条轨迹的亮度。
Portrait mode chooses a large aperture (a small 'f' number) which will make the depth of field (the amount of your shot in focus) smaller.
人像模式用一个大光圈(f值小)，而让景深(清晰对焦的那部分)变小。
The surface figure precision of the primary mirror in a large aperture telescope is a key factor influencing the imaging quality.
大口径望远镜主镜的面形精度是影响望远镜成像质量的关键因素之一。
The methodic design of the IR imaging system with large aperture.
潘君骅。大口径红外成像系统的光学设计。
The method can be applied to other large aperture optical systems.
所使用的分析方法可以应用于其他大口径光学系统。
The invention provides the large aperture zeolitic adsorbent and preparing method.
本发明提供了一种大孔沸石吸附剂及其制备方法。
You may also want large aperture (size), but don't forget portability and convenience.
你也许想要更大的口径，但是不要忘了便携性和方便性。
Stable and uniform large aperture discharge is the key technology to obtain high pulsed energy.
实现稳定、均匀的大体积放电，是获得高单脉冲能量的必经途径。
A large aperture laser beam scanning method by combining microlens arrays with rotating mirror is put forward.
提出微透镜阵列与转镜相结合的大口径激光光束扫描方法。
According to elastic shell theory, the paper presents several theoretical models of large aperture optical cell.
根据弹性板壳理论，提出大口径光学元件的几种理论模型。
It is necessary to combine several methods to test the spherical surface with small curvature and large aperture.
小曲率大口径球面的检验需要使用几种检验方法。
And the numeric simulation is done to get the multi-supporting results of the optical elements with large aperture.
针对各向同性圆形光学镜面做了具体的模拟计算，对圆形镜面的多点支承问题进行了初步研究。
FLIR – The large aperture enables a longer focal length, which provides higher resolution without losing sensitivity.
大孔径允许更长的焦距，从而在不损失灵敏度的情况下，提供更高的分辨率。
The smart large aperture space telescope is the most development potential space observation spacecraft in the future.
大口径空间灵巧望远镜系统是未来太空观测最有发展潜力的航天器。
The large aperture KDP electro-optical switch is a key unit for the new high-power laser multi-pass amplification system.
大口径KDP电光开关是新一代高功率激光器多程放大系统的关键部件。
The reflectivity measurement system makes it very easy to measure reflectivity distribution on large aperture components.
该系统的使用大大简化了元件表面反射率分布的测量。
Abstract : Ion beam etching technologies for developing large aperture Diffractive Optical Elements (DOEs) were reviewed.
摘要 ：总结了大尺寸衍射光学元件离子束刻蚀技术的研究进展。
Prestressed pier of hydropower station service radial gate features large aperture dimension, high water thrust and so on.
水电站工作弧门预应力闸墩具有孔口尺寸大、水推力大等特点。
For large aperture lens, scanning method was developed to measure the focal length in different locations within the mirror.
针对被测镜大口径的问题，采用了扫描的方法，这样可以测量被测镜不同位置的焦距。
The Gravity deformation of large aperture optical cell greatly affect the optical surface test and the optical system performance.
大口径光学元件的重力变形对元件检测和光学系统性能影响很大。
Sub-aperture stitching technology can help optical system fulfill the requirements of large aperture, light weight and collapsible.
这样的拼接式光学系统能够满足大口径、轻重量和可以折叠的要求。
A blackbody furnace of heat-pipe surface source with large aperture was developed for the calibration of infrared image optical systems.
针对红外成像光学系统校正，研制了大口径热管面源黑体炉。
A new compression scheme of interferential multispectral images is proposed based on the analyses of large aperture static imaging spectrometry.
从图像压缩的角度分析了大孔径静态干涉成像光谱仪成像原理，并提出了一种新的遥感多光谱图像压缩方案。
A more integrated theory of design and analysis has been established for the sake of developing the condensing lens type large aperture Frensnel lens.
建立了一套较完整的大口径聚光镜型菲涅耳透镜设计和分析理论。
The optical aberration difference between the biconvex Fresenl lens and the plane-convex Fresenl lens was investigated by designing a large aperture Fresenl lens.
通过一个大尺寸菲涅尔透镜的设计，比较了曲面菲涅尔透镜和平面菲涅尔透镜在光学像差方面的差异。
The large Hoop Truss Deployable Antenna (HTDA) in the space, with large aperture, light mass, big flexible character and so on, is type flexible multi-contact system.
空间大型环形可展天线具有展开口径大、质量轻、柔性大等特点，是一个典型的多柔体结构。
The essence of the fact that wideband signal can not be effectively transmitted using narrowband phased array in scenarios with large aperture and scan Angle is given.
以线性调频信号为例，揭示窄带相控阵在大孔径宽扫描角情况下不能有效发射宽带高分辨信号的实质。
So a novel passive polarimetric calibration scheme is presented, which calibrates large aperture polarimetric radar using calibrated small aperture polarimetric radar.
为此，提出一种新的无源极化校准方案，该方案利用已校准的小口径雷达来校准大口径雷达。
So a novel passive polarimetric calibration scheme is presented, which calibrates large aperture polarimetric radar using calibrated small aperture polarimetric radar.
为此，提出一种新的无源极化校准方案，该方案利用已校准的小口径雷达来校准大口径雷达。
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