1) penetration frequency
穿透频率
2) optimum penetration frequency
最佳穿透频率
3) critical penetration frequency
临界穿透频率
4) SFGPR
步进频率表面穿透雷达
1.
In view of the problem that the resolution and penetrating depth of the SFGPR target images are limited by the system noise and underground medium loss, the MUSIC is proposed for signal processing of SFGPR to get the depth information of the targets.
针对步进频率表面穿透雷达(SFGPR)得到的目标图像的分辨率和穿透深度被系统噪声和地下媒质损耗所限制这一问题,提出了应用多重信号分类(MUSIC)算法对SFGPR信号进行处理以得到目标深度信息。
5) penetration
[英][,penɪ'treɪʃn] [美]['pɛnə'treʃən]
穿透率
1.
The effect of the corona charging, electric field polarizing and neutralizing particles cases on the commercial fibrous filter filtrating fly ash has been investigated experimentally, including pressure drop, penetration and the change of the single particle charge between upstream and downstream.
实验研究了在商用的纤维滤料中,窄分布飞灰颗粒在电晕荷电、电场极化及静电中和器中和等外加条件对过滤压降、穿透率以及上游颗粒与逃逸下游颗粒的荷电分布特点的影响。
2.
Measurements of mean residence time and penetration of submicrometer aerosols in flows in tubes were made within the range of Reynolds numbers from 0.
在Reynolds数 0 0 7～ 0 2 6范围内 ,采用亚微米聚苯乙烯球形硬气溶胶粒子脉冲 ,测定了气溶胶粒子在毛细管扩散池组中的谱带展宽 ,由此获得了气溶胶在毛细管中的平均保留时间和穿透率 。
6) penetration rate
穿透率
1.
Presents the calculation methods of particle deposition velocity,deposition quantity and penetration rate in smooth ventilation ducts.
给出了光滑通风管道内颗粒沉降速度、沉降量和穿透率的计算方法,对光滑风道内颗粒的沉降规律、风道的过滤作用、风道所需的清洗周期进行了模拟分析。
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