preambles

英 [priːˈæmblz] 美 [priˈæmbəlz]

n.  序言; 绪论; 导言; 前言; 开场白
preamble的复数

柯林斯词典

  1. N-VAR 序文；导言；开场白
    A preamble is an introduction that comes before something you say or write.
    1. The controversy has arisen over the text of the preamble to the unification treaty...
      针对统一条约的序文出现了争论。
    2. 'I would like you to return to the villa as soon as possible,' she said without preamble.
      她开门见山地说：“我想让你尽快回到别墅。”
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双语例句

  1. First a convention, to talk about lofty aims, legislative details and lengthy preambles.
    先是举行了一次会议，来讨论一些高尚的目的，立法的细节问题以及一些冗长的宣言。
  2. These are preambles to identify that the following are script elements for the Load program to process.
    这是导言，用来识别以下用Load程序来处理的脚本元素。
  3. Don't waste time yours and your manager's with long preambles and rambling thoughts.
    不要用长篇大论和杂乱无章的想法来浪费你和经理的时间。
  4. Improving Efficiency When Detecting WLAN Preambles
    提高WLAN前导码检测效率
  5. Based on the characteristics of the overhead stations, open excavation and excavation running tunnel, the main geotechnical preambles are analyzed, which may provide valuable references to engineering geology investigation, design, and construction.
    针对沿线的高架车站区间段、明挖车站及隧道区间段和暗挖隧道区间段的岩土工程问题进行分析，为地铁1线的勘察设计和施工提供参考。
  6. Usually in OFDM system, the time-domain synchronization in the platform is the symbol-frequency synchronization using PN-sequence preambles. Its algorithm has been designed based on the requirement of platform, and validated by Matlab simulation.
    测试平台中的时域同步是OFDM系统下基于PN序列的符号和频率同步，其算法是根据融合方案时域同步算法，同时结合测试平台系统要求设计的，算法性能已经通过Matlab仿真得以验证。
  7. Simulation and FPGA implement results indicate that scheme proposed has the advantages of easy to realization, no phase ambiguity, acquisition in few preambles, high accuracy and meet the need of fast carrier phase acquisition in burst wireless broadband communication systems.
    仿真及实际运行结果表明：该方案简单易行，无相位模糊问题，仅需少量前导训练码就能快速捕获载波相位，精度较高，满足无线高速突发通信系统快速相位捕获的需要。
  8. With a bidirectional decoding ( BD) structure, the proposed algorithm fully utilizes the preambles of adjacent TDMA downlink slots and produces high quality soft decision output.
    通过执行双向解码，该解码算法充分利用了TDMA下行链路相邻时隙的前导序列，并给出高质量的软判决解码输出；
  9. In high mobility environment, the coherent time of the wireless channel may be less than the interval of the preambles.
    对于高速移动场景，信道相干时间的长度可能会小于前导码出现的间隔。
  10. In IEEE 802.16m, these preambles are sent only once per superframe.
    在IEEE802.16m系统中，前导码在每个超帧中只出现一次。
  11. Thus, the synchronization based on the preambles may not be able to achieve good performance in high mobility environment.
    因此，只依靠前导码不能在高速移动场景下达到较好的同步性能。
  12. The emphasis is design of preambles, signaling domain and pilot OFDM symbol through which the corresponding frame format adapted to the project is got. And based on the format, the frame and carrier synchronization algorithms are deduced.
    通过这些设计得到了适用于该项目相应的帧格式，并根据这种帧格式推导出了相应的帧同步算法、载波同步算法等。
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