aperture ratio
英 [ˈæpətʃə(r) ˈreɪʃiəʊ]
美 [ˈæpərtʃʊr ˈreɪʃioʊ]
口径比；孔径比；开口率
双语例句
- It is demonstrated that ML estimating error can converge to CRB quickly with increasing synthetic aperture length and Signal to Noise Ratio ( SNR), but a threshold effect exists.
研究表明，随着合成孔径长度和信噪比的增加，ML估计误差可以很快地收敛于CRB，但存在阈值效应。 - It is always a challenge of not able to get a good aperture ratio as the resolution density increases.
它始终是一个挑战，无法获得良好的孔径比为第密度增加。 - Effect of cutterhead compressing the front soil and influence of head aperture ratio on contact pressure of EPB shield to the front soil
土压平衡盾构刀盘挤土效应及刀盘开口率对盾构正面接触压力影响 - More significance, this technique is used for restraining speckle noise in synthetic aperture radar images successfully in equivalent number of looks and ratio images.
作用于合成孔径雷达图像中的相干斑抑制时，不论从视觉效果还是等效视数和比值图等衡量指标上都取得了较好的效果。 - We must design the ratio of the source beam size and aperture of object lens reasonably to assure energy matching ratio ( EMR) and to achieve smaller size of focus point and reasonable focus depth.
必须合理地确定光源的光束口径与光盘物镜孔径比值，才能保证其光能量耦合效率，并获得较小的光斑尺寸和合理的焦深。 - The parameters of porous Alumina membrane, such as aperture, hole density and aspect ratio, membrane thickness, had been effected by many factors mentioned above.
多孔铝膜的膜参数（孔径、孔密度、孔的纵横比和膜厚）和孔排布的规律性受到诸多因素的影响和制约。 - The relation between the spectrographic aperture ratio and elliptical eccentricity, spectral angle is also analyzed according to the elliptical geometry, it will decrease when the x-ray wavelength increases.
根据椭圆的几何关系，研究了光谱相对孔径与椭圆的离心率和谱线探测角之间的关系，它随X射线波长增大而减小。 - Based on frauhofer diffraction integral formula, the calculation and testing method of I_0 ( annulation)/ I_0 ( aperture) for different obstruction ratio of double reflection optical system are described in this paper.
本文从夫朗禾费积分公式出发，论述了不同遮拦比的双反射光学系统I0（环）/I0（孔）的计算与测试方法，并通过计算和测量获得了有实用价值的数据。 - Dynamic variations of soil water and heat under evaporation conditions varying with aperture ratio of plastic mulch
覆膜不同开孔程度蒸发条件下土壤水热变化动态研究 - The optimal IDT aperture and the aperture ratio are determined by calculating diffraction response.
最佳的IDT孔径和孔径比值由计算滤波器衍射频响确定。 - Al gate can obviously reduce total gate-line resistance and gate-pulse delay of a-Si TFT matrix used in AM-LCD. It is profitable for increasing the aperture ratio and image quality of high-information-content display screen.
Al栅可明显降低AM－LCD中a－SiTFT矩阵的栅总线电阻及栅脉冲信号延迟，有利于提高高密显示屏的开口率与图像质量。 - The effectiveness and characteristics of noise jamming to synthetic aperture radar ( SAR) are firstly analyzed through signal-to-jam ratio ( SJR) in this paper, and the particularity of jamming a SAR and the factors which impact the effectiveness of noise jamming are studied.
本文首先从信号&干扰功率比（信干比）的角度分析了合成孔径雷达（SAR）噪声干扰的效果及特点，分析了对SAR系统实施噪声干扰的特殊性以及影响SAR噪声干扰效果的因素。 - Spectrographic effects will be affected by the transmission efficiency of TCECS, which depends on the reflective ratio of a cylindrical mirror, the integrated diffraction of a crystal, the transmissivity of filter foil, and the spectrographic aperture ratio.
TCECS传递效率的高低将影响摄谱效果，而TCECS的传递效率取决于柱面镜的反射率、晶体的积分衍射率、滤光膜的透射率和光谱相对孔径。 - Research on fused silica microlens arrays with high effective aperture ratio
高有效孔径比面阵石英微透镜阵列研究 - Based on the practical experience, this paper analyzes the causes of mud spillover during directional drilling crossing in aspects of crossing route, design parameters, aperture expander, drilling velocity, mud mixture ratio and crossing through weak foundation. It also puts forward the preventive countermeasures.
文章依据实践经验，从穿越路径和设计参数、扩孔器和钻进速度、泥浆配比、薄弱部位的穿越等方面分析了定向钻穿越时冒浆的原因，并提出了相应的预防对策。 - Design of Black Matrix for TFT LCD with High Aperture Ratio
高开口率TFTLCD的黑矩阵设计 - It was found that at the same superficial gas velocity, bubble frequency and rise velocity are independent on the aperture ratio, hole diameter and baffle plate distance ( the ratio of the baffle plate distance to the bed diameter is smaller than 3).
结果表明，在一定的气速下，挡板的开孔率、孔径和板间距（级间高径比小于3）对气泡频率和气泡速度的影响较小； - Its practicality effective aperture ratio has been improved to about 92.8%, consequently the concen-tration efficiency of microlens array is increased.
其实测有效孔径比可达到92.8%，极大提高了微透镜阵列的聚光效率。 - This thesis analyzes the influence of alleviation effect of pressure relief structure on tunnel aerodynamic effect by different structure parameters, such as length, aperture ratio, shape, gradient and so on.
全文通过对比分析，归纳了在不同车速下卸压结构的结构参数，例如长度、形状、开口率、倾斜度等，对缓解隧道气动效应效果方面的影响。 - The results showed that there were significant effects of the impeller diameter, height and aperture ratio on its mixing performance, but the bottom wing width had rarely effects on its mixing performance.
结果表明：桨径、桨高和开孔率对其混合性能的影响均比较大，而底翼宽度则对其混合性能基本没有影响。 - This pixel circuit has the advantage of high aperture ratio and easy driving timing.
该像素单元电路具有开口率高、驱动时序简单的优点。 - In recent years, the development of modern optical system is multi-polar; the demands of large aperture, large relative aperture, steep aspherics and cavities with big ratio of length-diameter, micro-aperture aspherical surfaces are all increasing rapidly.
同时，光学系统元件也向着多极化方向发展，大尺寸大相对口径元件、高陡度大长径比内腔元件以及微小尺寸非球面光学元件的应用与需求都在不断增加。 - Owing to many advantages, such as high aperture ratio, high resolution, low cost and low power consumption, LCOS display becomes a promising display technology in recent years.
LCOS技术以高开口率、高分辨率、低价格和低能耗等优点成为近些年最具发展潜力的显示技术。 - The different shape of the opening, will make the best of the opening position and aperture ratio change dramatically.
开口的形状的不同，会使得最优的开口位置、开口率发生很大变化。 - The size of head aperture ratio of the shield cutter as the most important part of the cutter designing, determines the cutting conditions of the cutter to the soil to a large extent.
盾构机刀盘上开口率的大小作为刀盘设计的重要内容，在很大程度上决定着刀盘对土体的切削状况。 - According to the model, the factors that affect the mutual information are analyzed, such as the ratio of LCoS pixel number to CMOS pixel number, aperture ratio of LCoS and CMOS pixel, relative displacement and relative rotation angle.
利用该模型分析了LCoS与CMOS阵列像素数比、像素开口率、相对平移、相对旋转等因素对系统互信息量的影响。 - The slip ratio reduces with the increasing of aperture ratio.
随着孔径比的增大，滑动比减小。