查询词典 band-shaPed

A design and implementation method of the high speed modulation system, which adopted the new techniques of the FPGA and DAC based communication system,is presented in this paper. The effect of the key techniques of this system, such as the high speed digital signal processing for modulation, high speed based-band signal conversion, wide-band modulation, carrier suppression, high frequency and high precision system clock generation, is analyzed, and the solutions and performance analysis is also given. Finally, a high speed modulation system for space applications is implemented, can be used for high speed data transmission with QPSK, 8PSK, QAM or other kinds of digital modulation.

本论文依据正交调制原理，采用基于FPGA和DAC的设计技术，提出了一种高速、灵活的调制系统的设计方法，重点分析了系统组成的调制编码映射、基带脉冲信号转换、信号滤波、调制、系统时钟产生等关键技术环节的影响，解决了高速调制信号处理、高速数据转换、宽带调制、载波抑制、高频率高精度系统时钟的产生等关键技术问题，完成了一种适用于空间应用的高传输速率、多进制数字调制方式和调制体制灵活的数据传输调制系统的设计与实现，可在硬件设计不变的情况下，实现QPSK、8PSK和16QAM等多种调制方式的高速数据传输，QPSK调制速率达到500Mbps。

5Ns. The peak position of N band emission as well as the distinct emission region slightly moves towards the open end of the cylindrical cavity, and this does not happen to O band emission. Radiation transport efficiency of 6% is obtained for the φ400×1200um cylindrical cavity heated by x-ray source with radiation temperature of 118 eV.

从时间分辨的X光强度轴向空间分布来看，在较长时间（约1～1.5ns）内，O带X光在整个观测缝对应的轴向范围之内均有较大的辐射强度，在X光强度空间分布的变化过程中，其强度峰值的空间位置基本不变；而对N带X光，则只在较短时间（约0.5ns）内，在整个观测缝对应的轴向范围之内可观测到X光辐射，但只在靠近输运源约300μm的范围内有较强发射，在柱腔末端600～700μm范围之内的辐射则很弱，N带X光辐射轴向空间分布曲线的峰值位置在朝柱腔末端的方向移动，移动量大约为130～250μm。

The study of impact of dirt band on top coal drawing mining;2. The paper has studied the caving characteristics and technology on the fully-mechanized caving mining working face in structural complex thick seam containing dirt band are studied.

通过对综放工作面含夹矸结构复杂段顶煤放出特征和放煤工艺的研究，提出选择两刀一放单轮间隔放煤方式，有利于提高煤炭回收率，降低原煤含矸率。

Even with a lineup that included fan favorites like Pam Tillis, The John Cowan Band, and The Nitty Gritty Dirt Band, it is the opportunity to see the legendary Doc Watson in action that has always been one of Merlefest's biggest attractions.

尽管有乐迷们最喜欢的艺人像帕姆·提里斯、约翰·考文乐队和尼提·格里提·德尔特乐队作为嘉宾，莫尔音乐节最吸引人的地方仍然是看到传奇人物道格·沃森重返舞台。

By analogue simulating test, the paper discusses fully-mechanized sub-level with dirt band, the top-coal caving and drawing property , the caving procedure and drawing law, and the dirt band critical thickness related to complex structure thickness seam of 2429S.

主要以实验室相似模拟实验为主，对含夹矸复杂结构厚煤层中的2429S综放工作面含夹矸顶煤的冒放性、放煤工艺及放出规律、夹矸层极限厚度的确定等问题进行了论述，并指出了含夹矸顶煤的活动规律和放顶煤开采的技术措施。

Based on the analysis and investigations of dual-band microstrip annular ring slot antenna, a novel miniaturized dual-band annular ring slot antenna for WLAN applications is presented. It utilizes two rectangle notches to overcome the problem of resonant effects caused by the distance between inner and outer ring slots.

基于对微带双圆环缝隙天线的研究与分析，通过连接型矩形槽设计克服了内、外环距对谐振效果的影响，提出了一种应用于无线局域网通信的小型双频圆环缝隙天线，并且可以实现圆极化。

Plus 2 No's diagonal support braces made out of 76.1 mm OD (3.25mm thick –zinc coating as per BS 1387) MS pipe –total length of pipe 3 meters ; along with all fixing accessories like GI short winder, PVC caps , brace band , tension band , rail end cap,double clamp.

加上 2不支持括号对角线作出了七十六点一毫米外径（三点二五毫米厚锌层为每基站1387 ）质谱管道总长度为3米的管道；以及所有安装附件如消化道短络筒机，聚氯乙烯瓶盖，支撑带，张力带，轨端帽，双钳。

With the decrease of gap width and box draft, the position of the resonant wave number increases. The band width of the resonant wave number depends on gap width closely. With the increase of gap width, the band width increase.

共振频率主要随着吃水深度的增大而减小；其次随着狭缝宽度的增大而减小；再者就是随着箱体宽度的增大而减小。

The band is fronted by Brad Hoffman and Chris Nebesniak, they are the primary songwriters and driving force behind the band.

这个乐队由布拉德。霍夫曼和克里斯。尼贝斯尼亚克创建，他们是这个乐队的主要歌曲创作者和乐队发展的驱动力。

New Orleans jazz band, and drummer Return to the use of military band bass drum and marry, adopt a "double-click" performing skills, which is the big bass drum and saw each other on the counter position, a person at the same time with Alexander in the head and hit stems played.

美国新奥尔良的爵士乐队和拉格泰姆乐队的鼓手们使用军乐队中的低音大鼓和小鼓，采用一种&双击&的演奏技巧，即把低音大鼓和小鼓放在可以相互反击的位置上，由一人同时用鼓槌的头部和柄部击奏。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。