1) Optimum Detection Frequency Band
最优探测频率
1.
With analyzing the detecting procedure of Low-frequency active sonar and emulating about it, the Optimum Detection Frequency Band of Low-frequency Active Sonar were researched.
本文通过对低频主动声纳的主动声纳方程的分析与声学探测过程的仿真,初步研究了低频主动声纳在不同距离上的最优探测频率问题。
3) surveying frequency
探测频率
1.
For that reason,it should analyze and handle three important parameters of radar work:environmental conductivity,dielectric constant and surveying frequency.
为此,必须分析、掌握雷达工作的三个重要参数:环境电导率、介电常数和探测频率。
4) optimal frequency ratio
最优频率比
1.
And the optimal frequency ratio and optimal damp ratio of TMD are gained by nonlinear programming method.
以主结构在整个地震过程中吸收的能量值最小作为优化准则,考虑了主结构阻尼的影响,通过非线性规划的数学方法得出TMD的最优频率比和最优阻尼比,并采用最小二乘法拟合出相应设计参数的数学表达式,提出了在地震随机作用下,基于能量法的TMD参数优化设计方法,并进一步分析了TMD质量比、阻尼比、频率比与主结构能量的影响关系。
5) detectivity figure-of-merits
探测率优值
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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