查询词典 angular aperture

Polarimetric Synthetic Aperture Radar measures the frequency, magnitude, absolute and relative phase of targets' backscattering signals in imaging scene for any possible combination of transmit and receive antennas. The polarization synthesis technique on one hand has greatly increased the acquired polarization information, on the other hand increased the difficulty of system design and signal processing.

中文摘要极化合成孔径雷达的回波信号可以提供不同收发极化状态组合下成像场景内目标散射波的幅度、绝对和相对相位、频率等信息，极化合成技术的出现使获取的信息量成倍增加，信息量增加的同时系统设计和信号处理的复杂度增加，因此极化合成孔径雷达相关技术的研究成为微波遥感领域的热点。

The results show that the optimum mole percent of Al3+ to Yb3+ is 9—11 for high concentration of ytterbium-doped silica-based fiber at which low concentration quenching probability, high absorption coefficient and proper numerical aperture can be obtained.

揭示出在高掺Yb3+的石英基光纤中，共掺Al3+的摩尔浓度为Yb3+摩尔浓度的9—11倍时既可以减小Yb3+的浓度猝灭概率，又可以获得高吸收系数，同时还可更好地满足数值孔径的要求的结论。

Based on the theory analysis and experiment work, the paper studies the humidifying property of the centrifugal nozzle with firing pin type, high pressure and little aperture. Compared with the traditional air washer, the high efficiency and energy saving character of this kind of nozzle is stood out.

课题从理论和试验两方面分析研究了撞针型高压小孔径离心式喷嘴的雾化加湿性能，并将其与传统喷水室加湿系统进行能耗比较，突出了撞针型高压小孔径离心式喷嘴高效节能的特点。

In the experiments of Rayleigh laser guide star for adaptive optics on altazimuth Coudé telescope, the technology of LGS launched and received in the common aperture using polarizing beam splitting scheme is researched.

在地平式折轴望远镜上开展自适应光学瑞利激光导星实验，研究了信标光束同孔径发射和接收偏振分光技术。

The size of the anchor bolt cleading and the aperture therein should be identical with that of the base plate in the upside structure.

地脚螺栓的套板，其尺寸及套板上的开孔与日后上部结构中柱脚底板的尺寸及开孔相一致。

The basic principles for largely aperture PEPC with thinness crystal plane have been expounded.2. It is the first times to use horniness anodize aluminum film as the isolator of plasma in P.R.China. The life-time and breakdown voltage of anodize aluminum film have been tested.

国内首次成功将硬质阳极化膜用于等离子体绝缘，实验研究了阳极化膜的寿命和击穿电压特性；将等离子体绝缘的最低阳极化膜厚优化到了60μm(美国LLNL的选择为100μm)，解决了国内工程实施的可行性问题。

By using antifoam agent and air-entraining agent in turn to dispose polycarboxyl acid water-reducer,the quality of the aperture structure of concrete is improved,its air amount contained is controlled and the expected effect is produced.

依次使用消泡剂和引气剂对聚羧酸减水剂进行处理，使所生产的混凝土的孔结构质量得以提高，含气量得到控制，达到了预期效果。

The design of finite aperture aperiodic sub-wavelength DOEs is studied.

对具有非周期结构的亚波长衍射光学元件设计展开研究。

2 Will be the first of many invasive balance wheel spindle small aperture, so tight hole card. Wheel balance with the vertical center axis.

4.2.2.2 将平衡心轴小头一端穿入砂轮孔径内，使之卡紧孔壁，砂轮应与平衡心轴垂直。

Aperture card.

穿孔卡片

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。