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]。
The mm-wave section contains quadruple multiplication stage and iq modulation part . measurement has testified that triple-tuning of dds frequency 、 reference divider ratio 、 and loop divider ratio avoided frequencies with high spur level while ensuring the realization of total frequencies . the spur level is below-55dbc and frequency resolution reached 100khz; dds output frequency was up-converted to drive the m / n pll, reducing phase noise, which is better than-87dbc / hz @ 1khz,-92dbc / hz @ 10khz, decreasing frequency-hopping time which is less than 14us 系统分为微波与毫米波两大部分,微波部分综合利用了dds、lo混频锁相环和rf混频锁相环实现两路频差15mhz的xband全相参信号;毫米波部分,将xband本振信号四倍频得到毫米波本振;xband载波信号经开关控制形成脉冲信号,倍频、iq调制后得到毫米波发射信号。