reference n. 1.(对委员、审查人等的)委托;委托项目[范围]。 2.说到,论到,提到。 3.参考;参考书;附注,引证;基准,依据;关系。 4.(关于人品、能力等的)查询,咨询,询商;可供查问的人;证明人,介绍人;(身份、能力等的)证明书,介绍书,服务经历,鉴定书。 5.参看符号〔如 asterisk[*e], obelisk ?, section§, parallel‖, paragraph π等〕 (=reference marks)。 the commission's terms of reference 委员会的职权。 R- was made to me. 提到了我;所指的是我。 You make no reference to your plan in your letter. 你信里没有提到你的计划。 a book of reference=a reference book 参考书。 Who are your references 你的证明人都是谁? bear reference to =have reference to. give a reference to 提到,介绍。 have reference to 和…有关系。 in reference to 关于。 load one's pages with references (在著作中)引用大量参考资料[文献]。 make reference to 说到,涉及,提到;参考;查问;介绍。 with reference to 关于。 without reference to 不管,不论(without reference to age or sex 无论男女老少)。 vt. 加注,附加注脚;给(书等)列出参考书目[注明资料来源]。
This device splits the light beam into a measuring light beam and a reference light beam . 此设计把光束分成测量光束和参化光束。
Be different with other botdr systems , the coherent self - heterodyne botdr system uses only one consecutive laser . the light from consecutive laser is divided into two beams , the detecting light and the reference light , by a coupler 与其他的botdr系统分别使用两台激光器不同,自相干外差的布里渊散射分布式光纤传感系统采用一台激光器,经耦合器分为两路光束? ?探测光和参考光束。
At the same time , it uses a frequency translator to obtain a frequency shift , which is equal to the brillouin frequency in fiber . then the detecting pulsed light and the cw reference light can coherent . this method greatly improved the system ’ s sensitive and signal to noise ratio ( snr ) 同时在探测光路中引入一个光移频环路,使探测光移频后再经光纤中布里渊频移,其后向布里渊散射光频率与参考光束大致相当,可进行相干自外差探测,大大提高了系统的探测灵敏度以及系统的信噪比。