请输入您要查询的词汇:
词汇
Noise Figure
释义
Noise Figure
杂讯指数
杂讯指数是在1940年代初期,由FaroldFriis工程师将它的计算公式定义为:杂讯指数的单位为dB,以RF或者微波元件输入端的信号对比杂讯(SNR),除以输出端的SNR,就是杂讯指数。SNR越大,信号越容易侦测,表示杂讯的强度越弱。
随便看
special buyer
special cargo
special character
special characters table
special clause
special commodity rate
special commodity warehouse
special constable
special court-martial
special credit
special crossed check
special crossing
special customs invoice
special customs privileges facilities
special delivery
special delivery
special deposit
special drawing right certificates
Special Drawing Right(s)
special education
special effects
special endorsement
special exporter's declaration
special forces
Special Import Measures Act
语文网英语在线翻译词典收录了223822条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。
Copyright © 2000-2024 Yuwen.pub All Rights Reserved
京ICP备2021023879号
更新时间:2026/7/9 13:36:02