1) frequency division scanning
分频扫描
2) Video Graduation Scan
视频分划扫描
3) swept-frequency spectrum analyzer
扫描频谱分析仪
4) Frequency sweep
频率扫描
1.
The direct digital synthesizing frequency sweep signal system based on the technique of ISP;
基于ISP技术的数字频率扫描信号发生系统
2.
In the linear viscoelastic region, the frequency sweep measurement results showed that the waste liquor polymer solution has viscoelasticity.
在线性粘弹性范围内,频率扫描试验得出:甘蔗渣浆废液多聚物是具有一定粘弹性的粘弹体,增加固含量和提高温度都会提高复合模量G*,粘弹性更突出。
3.
A novel method of direct digital synthesizing frequency sweep signal is presented.
介绍了利用直接数字合成技术产生频率扫描信号的新方法。
5) sweep-frequency
多频扫描
1.
Objective To detect the value of using sweep-frequency in diagnosis of middle ear impaired otosclerosisMet hods 20 (28ears) surgery or CT proved middle ear impaired otosclerosis patients and 14(28ears) normal subjects were tested by sweep- frequency tympanometry to find out their resonance frequencies and statistic analysis were done among them.
目的 探讨多频扫描声导纳测试对病变累及中耳的耳硬化症的诊断价值。
6) frequency scanning
频率扫描
1.
The frequency scanning method is used to analyze the series-capacitor compensation of Baise in different compensation degrees,and the result show.
并用频率扫描法分别分析了百色串补线路在不同串补度下的谐振问题,说明了长距离输电系统在高串补度下容易引起次同步谐振。
2.
An approach of frequency scanning is used to research .
从薄板自由振动的微分方程式出发,采用动态基本解推导出其相应的边界积分方程式,计算中对边界积分方程进行缩减,应用频率扫描的方法研究薄板的动态特性,准确、有效地得到了其相应的固有频率。
3.
Compare with other electronic scanning antennas, the frequency scanning antenna is lower cost and complexity, and easy to form a large array.
频率扫描天线阵就是电扫描天线的一种,当改变其工作频率时,阵列各单元的相位关系就跟着变化,波瓣指向随之改变。
补充资料：分频
将较高频率变为其整数分之一低频率的方法。早期采用混频法，后又采用张弛振荡与被分频率同步法，还可用锁相法。在高频技术中，可用隧道二极管分频。常用二进制触发器分频法，利用反馈可实现任意分数的分频。分频所得信号可保留原信号的稳定度。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条