查询词典 sub-unit

A secure system consists of many sub——systems, even though every one of those sub-systems satisfies a certain security property, the composed system may not be secure, i.e. the composition maybe not satisfy the security property. It does mean that the security property should be composable.

安全系统是由许多子系统组成，每一子系统都必须满足一定的安全性质，但这不能保证由这些子系统组合而成的系统也是安全的，即组合的系统不一定也满足给定的安全性质，所以要求系统的安全性质满足可结合性。

There is 1 secondary school, 2 continuation schools and 9 primary schools in Pingshan sub-district; 1 secondary school, 1 continuation school and 3 primary schools in Kengzi sub-district.

坪山街道办现有中学1所，成人学校2所，小学9所。坑梓街道办现有中学1所，成人学校1所，小学3所。

The cubic interpolation polynomial is got firstly in the given sub-range of the hydrophone's sensitivity-frequency curve by using the Akima curve smoothed algorithm, and the maximum of the polynomial is calculated in the sub-range by using the one dimension extreme value continued fraction algorithm, finally the frequency of the hydrophone is got.

频率测试是在灵敏度详细测试的基础上，采用阿克玛曲线光滑算法求出检波器幅频特性曲线在给定子区间上的三次插值多项式，再利用一维极值连分式法求出该区间上多项式的极值，从而求出检波器的频率值。

All the following process was done on the sub image. Second, the morphology gradient theorem and its converse theorem were both proved. And the DGT reverse theorem was used to look for the regional maxima points of the sub image. In the improved region growing method, the seeds were those regional maxima points.

然后证明了数学形态学的膨胀梯度定理(dilation gradient theorem， DGT)及其逆定理，并利用DGT逆定理查找图像的局部极大值点，将灰度值不为0的局部极大值点作为区域生长法的种子点。

This paper proposed to use elliptical Gabor filter with least redundancy to convolute with palmprint,sub-bands with 4 scales and 6 directions are obtained,calculate the average and deviation of every sub-band,48D texture feature is extracted,and normalize the 48D feature in the whole database,finally use distance of absolute value to measure the difference between two feature vector.The result shows the arithmetic proposed by this paper has a little high retrieval accuracy.

本文采用最小冗余度的椭圆Gabor滤波器组对掌纹图像滤波，得到4个尺度6个方向的子带，计算每个子带的均值与方差，得到48维的纹理特征，在整个数据库中对48维特征进行归一化，最后采用绝对值距离衡量不同特征向量间的差异。

a scheme of channel estimation using cyclic prefix based on the measurement of the low-voltage power line channel model is presented.after obtaining the frequency response of pilot sub-channel under the state of comb-type pilot,the data sub-channel response is obtained by interpolating the frequency response in frequency direction.in the pilot-free data period,the estimation of the channel is carried out by using cyclic prefix in order to improve the performance of system error rate.

摘 要：通过实际测量给出低压电力线的信道模型，在此基础之上提出了利用循环前缀对信道进行估计的方法，即在梳状导频模式时，使用导频获得导频子信道频率响应后，对其在频域方向进行插值得到数据子信道响应，在其后没有导频的序列的数据周期内，使用循环前缀对信道进行估计，从而起到改善系统误比特性能的目的。

The basic sub-classified as a millimeter ruler, as well as basic sub-classified as a cm, but at the starting point within a decimeter mm steel ruler engraved for the amount of distance precision.

基本分划为毫米的钢尺，以及基本分划为厘米，但在起点处一分米内刻有毫米的钢尺，适用于精密量距。

In some embodiments compounds described by the formula CCl.sub.xH.sub.y comprise carbon tetrachloride, dichloromethane, or combinations thereof.

在某些实施方案中，由化学式CClxHy所表述的化合物包括四氯化碳、二氯甲烷或它们的组合。

PIV experiments were performed to study Kelvin-Helmholtz discrete sub-vortices. Numerical simulation was performed to study this phenomena and spectrum of the discrete sub-vortices is discussed.

利用PIV实验对剪切层中由Kelvin-Helmholtz不稳定性引起的小涡运动状态进行了分析，对小涡脱落频率进行了统计；进而利用数值模拟的方法，也得到小涡脱落的频谱。

In the detection process,detector can rapidly wash out the sub-window which is unlike face through the front of simple stronger classifiers;for the sub-window which is like face,in terms of similar degree distributer can dynamically select the back of stronger classifiers to determine whether it is a face.

检测时，对于不像人脸的子窗口通过靠前的结构简单的强分类器快速将其淘汰掉；对于像人脸的子窗口，根据其与人脸的相似程度，由分发器动态地选择后面的强分类器进行判定。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。