三焦距的

基本解释 (translations)

trifocal

与三焦距的相关的网络例句 [注：此内容来源于网络，仅供参考]

The above-described configuration of the zoom lens system allows appropriate setting of the imaging magnification of the fourth lens unit and the focal lengths of the third and fourth lens units.

变焦镜头系统的上述结构允许适当设定第四透镜单元的图像放大率以及第三和第四透镜单元的焦距。

A threemirror anastigmatic optical system, whose focal length is 36m and field angle is 0.75°, is introduced.

介绍焦距为36m，视场角达到0.75°的三反射式光学系统的设计过程，给出了设计结果。

But these methods limited by the expense of computing fundamental matrices and trifocal tensors or of the nonlinear optimization involved in computing epipolar tangencies. Through the studies of the invariants of the single axis motions, computational theories have been developed in this thesis to provide practical solutions for the problem of structure and motion from fitting the corresponding points in the whole sequence to its conic locus or conics for short.

在最近的研究中，一些研究人员利用视觉几何的方法从非定标的图象中对单轴旋转运动进行分析，提出了利用基本矩阵和三焦距张量求解单轴旋转运动中的关键参数——旋转角度的算法，但是该算法需要计算一系列相邻2图象的基本矩阵和一系列相邻3图象的三焦距张量，由于每个基本矩阵的自由度为7，每个三焦距张量的自由度为18，导致算法参数数量非常之大。

B exceeds, X line, examine before applying at each groups of art, groovy examination and B exceed those who measure line of focal length, directive fixed position is affirmatory. B of C group application exceeds in having method, monitor reach B to exceed interpose of the posture that monitor to discharge stone.

方法将85例肾盂结石患者分为三组，A组29例采取俯卧位，B组28例采取健侧倾斜俯卧位，C组28例采取俯卧位改变健侧倾斜俯卧位，分别在相应体位下进行ESWL术。B超、X线、检验应用于各组术前常规检查及B超测量焦距、指导定位线的确定。C组应用B超进行术中监测及B超监测体位干预排石。

The merit of the invention are: 1 adopting free curved surface imaging method , three part reflection type Zernike polynomial free curved surface forms short focal distance bigger, relative apertures bigger fields of view angle imaging , rectifying optical aberration much better and its structure is simple; 2 adopting the reflection structure without optical lens, has removed the effect of various chromatic aberration , guarantee the imaging articulation; 3 adopt the design of short focal distance big fields of view angle, focal distance 8 - 15 mm, field of view angles 100 -135 degree, having 120 times multiplications under 250 mm imaging distance, having ultra-thin characteristic property; 4 adopting big relative apertures design ,the relative aperture is 2.0-2.4, having improved the illuminance of flat surface; 5 adopting image space telecentric imaging method , ensures that the image surface irradiance is homogeneous.

本发明的优点是：1采用自由曲面成像方法，三片反射式Zernike多项式自由曲面形成短焦距大相对孔径大视场角成像，更好地校正像差，结构简单；2采用无透镜形式的反射式结构，消除了各种色差影响，保证成像清晰度；3采用短焦距大视场角设计，焦距8～15mm，具有100～135度的视场角，在250mm成像距离下有120倍的放大倍数，具有超薄特性；4采用大相对孔径设计，相对孔径为2.0～2.4，提高像平面上的光照度；5采用像方远心成像方法，保证像面辐照度均匀。

Considering the thermal-induced birefringence, the g parameter coordinate system is analyzed, the formulas of radially polarized and azimuthally polarized focal lengths in three different cavity structures are deduced and the proper cavity structure to get the thermal focal length coefficients is presented.

考虑热致双折射效应，利用等效谐振腔的g参数坐标图进行分析，推导了三种不同腔型结构下径向热透镜焦距和切向热透镜焦距系数的计算方法，分析并得出了测量热透镜焦距系数所需的腔型结构。

Methods A single shot 3-D laser scanner, VIVID 910, was used to capture the craniofacial images of 227 patients. Only a top light was used during scanning. The patients sit up straight with their Frankfurt plane parallel to the horizontal plane, and the shot was 10° upper-wards. The scans were applied frontally and 80°bi-laterally, and the data were registratered, merged and processed with a general reverse engineering software. The usage time and the image quality were documented.

利用VIVID 910单镜头三维激光扫描仪扫描227例受试者的颜面三维影像，采用全室内顶置光源，受试者眶耳平面尽量与地面水平，扫描仪镜头水平抬高10°，使用14mm焦距镜头，于受试者正前方及双侧各80°位置采集数据，获得数据经通用软件拼接、二期处理，统计扫描及数据处理所需的时间及扫描结果质量。

Using two perfect plasma models(concentric sphere and variable focus ellipsoid), which have different shape and different gray distribution, the different cross-section tomograph figure and the gray density diagram are presented . The offset distance formula , which describes the laser beam penetrates through the laser welding plasma, is presented.

对两种理想的等离子体模型(三同心球体和变焦距椭球体)进行了分析，建立了不同剖面的密度分布层析图，给出了激光束穿越球形等离子体时由于折射引起的对光轴的偏移距离的公式。

On the basis of imaging distance, SLM's physical microstructure and Fresnel diffracting condition, the holographic sampling, calculating and coding methods have been designed.

论文摘要：文章探讨了面向空间光调制器的三维全息编码方法，以数字微镜器件为空间光调制器，利用截面叠加合成全息图的方法，分析了成像距离与会聚透镜焦距等参数之间的关系，根据成像距离、SLM像素结构和Fresnel衍射条件，设计了全息抽样、计算和编码方法。

I'll describe a shot from the Exterior Brookfield sequence of an exterior of a row apartment on fire with an explosion blasting out the third story windows. The shot was composited on an Inferno by Bob Wiatr. We started with a live plate of the street scene. Our first task was to remove a foreground chainlink fence and camera crew. We recreated the fg matching the flashing ambulance lights. To create a snowy, misty look we used a number of logic ops of the bg with a mist plate which was basically the bg heavily blurred and multiplied back onto itself, graduating to create a sense of dimensionality. Glows were added around lights and flames using Sapphire plug-ins and light beams were added to streetlights. Four or five layers of 3d particle snow created in Maya were combined with practical elements varying in size and focus depending on distance from the camera.A miniature explosion element was incorporated into the comp, also with added glows, interactivity with the building, and rotoscoping of foreground objects. The entire comp was then time warped for editorial matching with the subsequent cut.

我可以描述一个Exterior Bookfield的几个镜头，那是一排的公寓着火，在三楼窗户引起爆炸，这个镜头是Bob Wiatr用Inferno合成的，我们用一个现场的街道镜头开始，我们的第一个任务是删除一个在前景中的链条状的篱笆和摄像人员，我们重新制作了前景以期与前景中的闪烁的救护车灯匹配，为了制作一个下雪的雾蒙蒙的效果，我们用了大量的logic ops，用了一个雾层，这个层基本上就是把背景尽量模糊然后再把它重新加到背景上面，渐变式的制作出一个层次感，自发光用Sapphire插件加在灯光和火焰的周围，而光线被加到路灯上，在maya中制作的四到五层的三维的粒子雪用来和不同大小的真实的素材混合在一起，焦距则依赖镜头的景深，同时在楼房爆炸的地方加入了一个缩小了的爆炸素材，以及爆炸的辉光效果，和重新放置的前景物体，整个的镜头接着匹配时间用来做最后的剪辑制作。

与三焦距的相关的网络解释 [注：此内容来源于网络，仅供参考]

inverse square law：[光]平方反比律

intersectin of third 三份一构图的方法 | inverse square law [光]平方反比律 | inverted telephoto lens =retrofocus Iens 广角镜头之一种 (扩大后组焦距的设计)

three-coordinates measuring machine：三座标测量仪

three-component zoom lens 三组式变焦距镜头 | three-coordinates measuring machine 三座标测量仪 | three-dimensional 三维的,立体的

A 0.5-inch wide-angle lens：焦距0.5时的广角透镜

3D pattern less lens edging system 三维全自动免模板磨边机 | A 0.5-inch wide-angle lens 焦距0.5时的广角透镜 | A 0.7-inch focal-length lens 焦距0.7时的透镜

trifocal：三焦点的,三焦距的

triethanolamine 三乙醇胺 | trifocal 三焦点的,三焦距的 | trifocal spectacle 三焦眼镜片

trifocal spectacle：三焦眼镜片

trifocal 三焦点的,三焦距的 | trifocal spectacle 三焦眼镜片 | trigger 触发器