1) critical penetration frequency
临界穿透频率
2) penetration frequency
穿透频率
3) critical frequency
临界频率
1.
Reconstruction ionospheric critical frequency using Artificial Neural Network over limited region;
利用人工神经网络重构区域电离层临界频率分布
2.
The critical frequency of ionosphere at linearity condition and the atmospheric refractive index formula are derived.
通过对线性条件下电离层临界频率和大气折射率公式的推导,并结合电离层电子浓度经验分布模型对电子浓度和大气折射率进行数值模拟,进而对电离层大气折射率的高度剖面图及其变化特性进行了分析,为微波卫星链路传播提供了理论参考。
4) critical permeability
临界渗透率
5) critical penetrating velocity
临界穿透速度
1.
The critical non penetrating area density under different non penetrating probability and the critical penetrating velocity under different penetrating probability for different compound structure armors with a definite confidence level were presented by small sample two dimension up and down method based on many ballistic tests.
在靶试数据基础上运用该统计方法 ,推导出三种复合材料防弹板在确定置信度和一定穿透率下的临界穿透速度、最小全穿透速度和最大不穿透速度 ,以及一定未穿透概率下的临界面密度 。
6) ballistic limit energy
临界穿透能量
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