在线词典
在线词典,是一款在线使用的中英文查词词典。本工具支持查询英文和中文单词及词组的含义,查询效率高、结果丰富,包括单词变体、常用短语、英英释义、同义词、同根词、词语辨析等,是外语学习者必备的在线查词工具。
输入要查询的单词:
intermediate frequency
查词链接:
https://www.dute.org/dict/intermediate_frequency
复制链接 中频:在混频接收中,信号在解调之前被转换成的相对较低的频率。
查看英英释义
abstract:
In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency.
网络释义
中频
... 泰博文档网 关键词:中频,数字移相器,Ku波段,加载线,开关线,3dB支线耦合器 [gap=2381]Key Words: Intermediate Frequency (IF), digital phase shifter, Ku-band, loaded-line, switched-line, 3dB branch-line co...
中间频率
...项目) 电路型态( Circuit Type ):四重变频超外差( Quad-Conversion Super Hetrodyne) 中间频率( Intermediate Frequency ):一次中频73.05MHz, 二次中频8.83MHz, 三次中频455KHz, 四次中频100KHz 关于接收机的部份,最基本的是要先定义其电路型态和...
中频频率
中频频率 ( Intermediate Frequency ): 中频频率 的选定,对接收的性能也有很大的影响,中间频率较高,防止镜频干扰的能力较强;但相对的接收增益和选择性则较差,...
中高频中间频率中频
... intermediate frequency 中高频中间频率 intermediate frequency 中高频中间频率中频 intermediate frequency 中频 ...
常用短语
更多常用短语近义词
[物]中频
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{phones} {trans} {trans_ee} {exam_types}{web_trans} {variants} {phrases} {synonyms} {rels} {discriminations} 查词链接:
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复制链接{phones}
{text}:[{value}]
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查看英英释义
{trans}
{pos}
{list} {tran}
{words}{word}同义词: {words}
{pos}
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单词变体
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常用短语
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近义词
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同根词
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{discriminations}
{num}、{title}
{description}- {usages}
{description}