Retrieval performance includes evaluation of recall ratio, precision ratio, speed of retrieval, cost and convemence etc.
检索性能主要包括查全率、查准率、检索速度、费用与方便性等指标。
Experimental results showed that the algorithm can process with high detection ratio and high precision registration noise-corrupted images and images with complicated background.
实验结果表明，该算法能处理背景复杂和多噪声的图像，具有极高的检测率和精确度。
The combustion control techniques for reheating furnace are in order to search the optimal air fuel ratio, to improve the control precision of the temperature and the velocity.
加热炉燃烧控制技术，就是在各种燃烧工况条件下，找到合理的最佳空燃比，以提高炉温控制精度和加热速度。
What would be an efficient way of calculating ratio of two factorials with arbitrary precision?
什么是两阶乘计算任意精度比的一种有效途径？
Thermal stability and Power Supply Rejection Ratio (PSRR) of the voltage reference circuit are the two major factors that influence the precision and stability of the whole system.
它的温度稳定性和电源电压抑制比是影响整个系统精度和性能的关键性因素。
In order to improve the signal noise ratio and the precision of the analysis, a "two-level sifting" is processed in recording and analyzing VLP by HOLTER.
为了提高晚电位分析结果的精确度，提高信号噪声比，在HOLTER记录和分析时，采用了“二级筛选”的设计方法。
Introduced a ratio method to measure the heat stream temperature with platinum resistor, the interface circuit is simplified and the precision for the flow measurement improved largely.
引入了一种基于比率法的铂电阻高精度测温方法，简化了接口电路，从而提高了热蒸汽密度和流量计量精度。
The precision ratio of solvent was confirmed, and feasible spread solvent was selected.
确定了溶剂的精确配比，选择了适宜的展开剂。
Finally, the aspect ratio was defined to improve the retrieval precision.
最后，设定纵横比辅助搜索，以提高检索精度。
Experimental results indicate that tiny feeding, low voltage, low duty ratio and high frequency have important effects to increase the truing precision.
实验结果表明最后整形阶段的微小进给量及低电压、低占空比和高频率的电参数对提高整形精度具有重要作用。
The results indicate that the precision mainly depends on the ratio of the defect length to the critical defect length defined in this paper when the wave velocity in the piles is accurate.
结果表明，当桩身波速准确时，峰-峰点反演精度主要由缺陷实际长度与定义的缺陷临界长度的比值决定。
Pump and pump developed can realize high precision A/B with the ratio of 1:1 feed feeding function.
自主研发的泵胶和定量泵能够实现高精准的A/B以1：1的比例供料送料功能。
These new technologies include not only precision, miniaturization, and net work of weapons, but target recognition, optoelectronic countermeasure, and efficiency-cost ratio of countermeasures, etc.
这些新技术不仅包括精确化、小型化和武器网络化，而且也包括目标识别、光电对抗和对抗效费比等。
Experimental results show that the systematic controlled precision for the ratio of water could reach 1% or better, and the heavy oil consumption could reduce 7.8% in average.
实验结果表明，该系统对掺水率的控制精度可达1%以上，燃油消耗率平均降低7.8%。
By practice, this improved program has greatly increased production efficiency, precision of machining, and reduced the ratio of disqualification.
经实践证明，该方法极大地提高了直螺杆加工的生产效率和加工精度，降低了产品不合格率。
This paper presents following research result that the penetration ratio (depth to caliber) up to 10 has been achieved by using the precision shaped charge warhead technology.
介绍了采用精密破甲战斗部技术使破甲穿深突破10倍装药口径的研究成果。
The system can decrease the noise and can increase the ratio of signal to noise and the measurement precision.
触发判选与数据获取系统较大地抑制了噪声，提高了信噪比和测量精度。
This method not only considers the fuzziness of water quality classification limit but also enhances the precision and the utilization ratio of information.
该方法不仅注意到水质分级界限的模糊性，而且信息利用率和精度均有较大幅度的提高。
Assemble model can draw components of retrieval system precisely, it can also be used to account recall ratio, and precision ratio.
集合模型能够精确地描述检索系统的构成，还可以用来计算检索的查全率和查准率。
Compared with simulant earthquake, digital earthquake has improved a lot in dynamic range, resolution ratio, amount of information, system precision and data processing conversion etc.
与模拟地震观测相比，数字地震观测在动态范围、分辨率、信息量、系统精度、资料处理转换等方面有了很大提高。
Based on electronic compensation, the error compensation device used in high precision and small ratio current transformers is developed with operational amplifiers and transistors.
利用电子补偿方法，采用运算放大器和晶体管研制成了高精度、小变比电流互感器误差补偿装置。
The result shows that the accuracy, precision and recovery ratio are all satisfactory.
所得的测定结果的准确度、精密度和回收率都是令人满意的。
It provides an essential condition for the research on the relations between recall ratio and precision ratio.
为进一步研究查全率与查准率的关系提供了必要的条件。
The efficiency and quality of inside thread influence directly production rate and ratio of precision. Therefore, it is very important that choosing appropriate process way.
内螺纹加工效率的高低和加工质量的好坏直接影响零件的生产效率和精度，因此选择合适的内螺纹加工方法就显得尤为重要。
A pressure vessel experiment system with high precision has been developed based on the characteristic of inverse ratio between the volume of contained liquid and pressure.
基于密闭液体的体积变化与压力变化之间呈反比的特性，研制了一种高精度压力试验系统。
By comparing with other modeling methods, it is shown that Models in this paper have lower error ratio obviously, satisfy the engineering precision demand, and have application value.
与其他建模方法进行比较可以看出，文中所建回归模型误差明显降低，满足工程精度需要，具有实际应用价值。
The system will greatly increase the measurement automatic degree and precision in the petroleum product distillation, has better performance-price ratio.
本系统大大提高了石油产品蒸馏测试的自动化程度和测试精度，且具有较高的性能价格比。
The experiment results show that this focused-spider can raise the precision ratio greatly.
实验结果显示，该主题蜘蛛能有效提高查准率。
Except for keyword - in - context index, there is no breakthrough made in automatic derived indexing today due to low precision ratio of retrieval.
自动抽词标引除编制题内关键词索引外，至今没有突破性进展，主要是检准率太低。
Based on the results, expanding-ratio is important to dimensional precision of finished products.
结果表明，扩径率是影响制品横断面尺寸精度的一个主要因素。
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