查询词典 lens

According to the relationship between temperature and the focal spot of lens antenna, the focal spot size of homemade millimeter wave dielectric lens antenna was measured by infrared temperature measurement technology. The experimental result, which was regard as the actual value, was achieved through analyses and calculations, and its designed value was corrected with it, then the exact radiation of millimeter wave was achieved.

摘 要：根据温度与透镜天线焦斑之间的对应关系，用红外热像测温方法对自行设计的毫米波介质透镜天线的焦斑进行了测量，经分析计算，得到了透镜天线焦斑的实测值，对透镜天线焦斑焦距的设计值进行了修正，实现了毫米波的定位定功率密度辐射。

Ray tracing method is used to calculate the spot pattern for different lens section plane,and then lens section plane of available dielectric material is optimized to reduce aberrations,so as to expand the field-of view.

采用射线追迹方法计算不同透镜剖面成像系统焦面上的点列图，对商用介质材料透镜通过优化剖面形状来减小像差从而获得视场扩大的效果。

The influence of the size of sound lens and the sound velocity in sound lens material and crude oil and rock stratum on the sphere of action is studied.

分析了声透镜尺寸及材料中的声速、原油及岩层中的声速对其传播距离的影响。

The sagittal depth ," S ",(also called sagitta , sagittal height or sag)is the perpendicular distance between the geometric center of the back lens surface and the diameter of the lens.

12矢深，& S &，，指镜片内曲面的几何学中心至线状直径之间的垂直距离。

I make it a point to always have both a short zoom lens and an intermediate telephoto lens with me when I am in the field.

我在野外，通常都带着1个短焦镜和一个中间透镜，使我获益菲浅。

Canon, Nikon, and other brands have a huge auto-focus lens group, from ultra-wide-angle to ultra-telephoto, from the macro to the soft focus, users can choose according to their own needs matching lens.

佳能、尼康等品牌都拥有庞大的自动对焦镜头群，从超广角到超长焦，从微距到柔焦，用户可以根据自己的需求选择配套镜头。

The present invention provided a digital camera and a digital single-lens reflex camera which do not give damage to an imager in deciding framing even in the case of a single-lens reflex camera capable of through-image output.

提供即使是能够实时取景输出的单镜头反光式照相机，也不会在决定成帧时对成像器带来损害的数字照相机以及数字单镜头反光式照相机。

Because of the excellent flatness of the semiconductor element mounting surface, the quantity of a peripheral light of a taken image hardly drops even with a wide-angle lens, if the hollow resin package is used in a digital single-lens reflex camera or the like using a large-sized solid image pickup element.

另外，由于半导体元件搭载面的平坦性优异，因此，如果将本发明的树脂制中空封装用于使用大型的固体摄像元件的数码单镜反光相机等，即使使用广角镜头，摄影图像的周边光量的降低也少。

Optical mouse lens system of the launch and the combination of components is one, fixed in the shell on the mouse, and the phototransistor is fixed in the circuit board, the location of the two must be very precise, manufacturers in the calibration of the location with hot melt adhesive to a fixed LED components in the lens, and if in use, the mouse has been touched or fall too much vibration, it is possible to make hot melt off, shift light-emitting diodes.

光电鼠标的发射及透镜系统组件是组合在一体的，固定在鼠标的外壳上，而光敏三极管是固定在电路板上的，二者的位置必须相当精确，厂家是在校准了位置后，用热熔胶把发光管固定在透镜组件上的，如果在使用过程中，鼠标被摔碰过或震动过大，就有可能使热熔胶脱落、发光二极管移位。

Methods: Paraffin (7 μm in thickness) and methacrylate resin (25 μm) embedded renal sections were observed using 40× objective lens and 100× oil lens, respectively, and the volume fractions and diameters of the renal tubules and the tubule nuclei were estimated with stereological methods.

分别用高倍镜(40×物镜)和油镜(10 0×)观察石蜡(7μm厚)和甲基丙烯酸树脂(2 5 μm厚)包埋的肾脏切片，利用体视学方法测量肾小管的体积分数和直径以及肾小管细胞核的体积分数和直径。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。