信号主要分布在低频区域，而噪声主要分布在高频区域，同时图像的细节也分布在高频区域。
Signal is in low frequency, while noise in high frequency and minutia in image is also in this area.
水印检测时，分别在中频和低频区域提取水印并进行比较，采用效果较好的水印作为检测水印。
We extract watermarks in the intermediate frequency and low frequency region and compare them, using the extracted watermark which is better.
尽管这种活动主要存在于无线电声音频率分区的超低频区域，我们还是能够通过听觉来捕捉到它。
Existing predominantly, in the Very Low frequency part of the radio spectrum that corresponds with the audio frequency range, we can experience this activity as audible sound.
本文提出的网格简化算法是根据网格顶点的曲率，采用边折叠的方式来减少低频区域的网格顶点密度。
This paper proposes a mesh simplification algorithm based on vertex's curvature, which use edge collapse method to reduce the density of low-curvature region of meshes.
分析了变频器调速系统在低频区域的特性，叙述了该系统在低频区存在的一些问题，并提出相应的改善措施。
The low frequency regional characteristics of variable speed system are analyzed, some problems in the system low frequency reional is described, corresponding improving measures were offered.
输入信号的频率只有位于噪声能量集中的低频区域，才有可能使输入信号被适量的噪声选择而产生随机共振现象。
Only the frequency of the input signal locates in the low frequency region, can the signal be selected by a proper noise level to produce SR phenomenon.
文章着重分析了变频器调速系统在低频区域的特性，阐述了该系统在低频区存在的一些问题，并提出相应的改善方法。
This article has mainly discussed the characteristics of the regulation system of frequency transformer in low-frequency areas and some problems and proposed some improvements.
在我国大区交流互联系统中存在着区域间弱阻尼或负阻尼低频振荡问题。
In domestic AC interconnected area power grids the low-frequency oscillations still exist due to insufficient damping.
本文通过对某钢铁企业南变电力系统的稳定性分析，给出了低频减载和区域安全稳定控制两种方案。
Through analysis of the stability of NanBian power supply system in a steel enterprise, under-frequency load-shedding plans and regional security and stability control plans are adopted in this paper.
颜色特征采用整数小波低频系数矩阵中环形区域的F -范数，纹理特征则采用高频部分的能量比值。
The circular region F-norms in low frequency band of wavelet transform is used as color feature of the image and the energy ratio of high frequency band is used to form texture descriptor.
对于低频融合，采用了基于领域像素相关和基于区域方差相结合的融合策略。
For low frequency fusion, it is used to combine with bases on domain pixel correlation and regional variance.
中国东部降水同样存在数百年的趋势变化，且存在明显的区域差异，特别是华北与江南的低频变化趋势几乎相反。
Precipitation showed the inter-centennial tendency having obvious spatial difference, especially in North China and south of the Yangze River, is opposite to the low frequency change trend.
该控制器以PM U得到的区域间电压相角差信号作为输入信号，能够直接有效地反映区域间低频振荡特性。
This controller's input signal is the voltage phase Angle difference between two areas obtained by PMU, which can effectively reflect the inter-area low frequency oscillation characteristics.
所述容积包括相对于隔膜倾斜定向的区域，用于支持扬声器的低频响应。
The volume may include a region obliquely oriented relative to the diaphragm to support a low frequency response of the speaker.
如此研究一直在低频率活跃的 （LFA）被拖的排列声纳的区域中继续有一些时间之久。
Thus research has been going on for some time in the area of low frequency active (LFA) towed array sonar.
通过运用平面波展开方法以及有限差分时域(FDTD)方法进行分析，可以明显地发现，在低频和高频区域增大了光子晶体的光子禁带。
By using the plane wave expansion and finite-different time-domain (FDTD) methods, we can find a larger absolute band gap in the low and high frequency.
结论耳蜗顶部区域的局部微循环障碍可以导致低频范围为主的听力损伤。
Conclusion When the local microcirculatory disorders in the cochlear apical part took place, the hearing loss was more marked in the low - range frequencies.
半导体激光器在适度光反馈条件下，在数值上研究出其低频波动区域的动态特性。
Dynamics of a semiconductor laser subject to moderate optical feedback operating in the low-frequency fluctuation regime is numerically investigated.
该融合策略首先在区域能量的基础上引入区域梯度，然后根据匹配度的类型和测量值进行小波低频系数的选取。
It is performed by introducing the local gradient into local energy and then selecting the low frequency coefficients according to the type and the vale of match measures.
同轴馈源是用于反射面天线双频共用馈源的一种重要形式，其内导体为工作在高频段的圆波导馈源，同轴区域为工作在低频段的同轴馈源。
The coaxial feed is an important dual-band feed used in reflector antennas. The inner conductor of the coaxial feed is the high frequency feed, and the coaxial zone is the low frequency feed.
同轴馈源是用于反射面天线双频共用馈源的一种重要形式，其内导体为工作在高频段的圆波导馈源，同轴区域为工作在低频段的同轴馈源。
The coaxial feed is an important dual-band feed used in reflector antennas. The inner conductor of the coaxial feed is the high frequency feed, and the coaxial zone is the low frequency feed.
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