特征方向

On the basis of recommending the concept and basic feature, the main challenge that current information security of national defence is confronted with is analyzed by the numbers. Then the basic approaches for strengthening the building of information security of national defence is introduced roundly and by the numbers from some aspects such as theoretical investigation, technical furnishment, personnel training and statute building.

全文从国防信息安全的概念、基本特征入手，系统分析了当前危胁国防信息系统安全的各种因素，综合分析得出从技术和非技术两个方面加强我国国防信息安全的基本对策，力求以理论研究引导和推动国防信息安全系统建设实践，为我国国防信息安全的发展方向、建设及运用提供可靠的理论依据和支撑。

In 1896, he added to Galton's technique, creating his own classification system based on the direction, flow, pattern and other characteristics of the friction ridges in fingerprints.

在1896年，他补充说到Galton的技术，创造根据方向的他自己的分类系统，流程、样式和摩擦土坎的其他特征在指纹。

By analyzing the geological characteristics,function of coal gathering,coal measures strata and burial conditions of Jiyuan area,it is pointed out the prospecting direction for coal field.

通过对济源西部地质特征、煤田聚煤作用、煤系地层及埋藏条件的分析，提出了在该区的找煤方向。

The community is composed of 136 species belonging to 46 families and 73 genera.

群落结构特征方面的材料是研究它的分类、分布、演替和合理利用的方向所迫切需要的[2]。

We reviewed recent advances in the ED glycolytic pathway of archaeon concerning enzymes, regulation and energy transformation. The potentials of glycolysis pathway in archaea were also discussed.

本文综述了古菌ED葡萄糖降解过程中的各种酶、调控机制以及能量转化特征的最新进展，并对进一步的研究方向做了展望。

It makes full use of the direction information which goes along with the process of the optimum edge detection, and two algorithms: region statistics and center collection are designed to realize the enhancement of the central information by converging the outline of gobbet object to the center of it,and at the same time it effectively resolves the problem of cutting up the outline of the object and attribution of it; the algorithm of barycenter convergence and gobbet feature decision are used to realize the accurate location of the central position.

该方法充分利用最佳边缘检测过程伴生的方向信息，设计了区域统计、中心集聚算法，将团块目标轮廓信息会聚到目标中心以实现中心信息增强，同时有效地解决了目标轮廓分割及归属问题；采用重心聚合和团块特征判定算法，实现中心位置准确识别定位。

The angular dependency of this parameter is examined by using a goniometer system with an infrared radiometer for several different natural surfaces.

利用装有红外辐射计的测角系统研究了自然地表面的红外辐射的方向特征，检测了几种典型自然地表面的地面温度的角度关系。

In this paper, a gradient based robust method for estimation of fingerprint orientation fields is proposed.

作为指纹的全局特征，指纹方向场在自动指纹识别系统中发挥了非常重要的作用。

This continuous directional image transits smoothly and exhibits not only good continuity, gradualness, and excellent robustness to the noises, but also very high precision.

这种连续方向图过渡平滑、自然，具有很好的连续性、渐变性和抗噪性，同时又具有极高的精确度，能更精确地反映指纹脊线的结构特征，从而使得滤波效果更佳。

The technical proposal includes a frame (9), a suspension frame (1) on the frame (9), a depth wheel (7) and a power system. The invention is characterized in that the power system is connected with one or more than one crank and rocker mechanisms provided with one or more than one cutters(6). The cutter (6) is parallel to the advancing direction of the multifunctional punctuate, strip typed grass root cutter.

技术方案包括机架(9)，位于机架(9)上的悬挂架(1)，限深轮(7)和动力系统，其特征在于，与该动力系统相连接有一个或一个以上的曲柄摇杆机构，在该曲柄摇杆机构上安装了一把或一把以上的切刀(6)，所述切刀(6)与本多功能点、条式牧草切根机的前进方向平行。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。