precision ratio

Design and precision analysis of dual-modules frequency divider with regulable duty ratio

一种可调占空比型双模分频器设计及精度分析

The method not only takes account of precision and recall but also the ratio of summarization.

其创新之处在于评价中不仅考虑了文摘的精确率、召回率，还考虑了文摘压缩率。

After calibrated by Uranium isotope ratio reference materials, the accuracy and precision are improved.

使用铀同位素标准物质校正质谱计,方法测量铀同位素丰度比的准确度和精密度明显提高.

It improved the signal to noise ratio and data precision by the ways of time domain average processing and adding index window before model analysis.

在模态分析前，通过时域平均处理及加指数窗等方法来提高信噪比和数据精度。

In different signal to noise ratio ( SNR) and multi-path channel conditions, and compared with the traditional algorithm, the precision of improved timing algorithm is obviously improved.

在高斯白噪声和多径信道条件下，与传统算法比较，改进算法定时同步精度有明显提高。

Many papers have discussed the relationships between recall ratio and precision ratio.

有多篇文章讨论了查准率和查全率之间的种种关系.

Arranged signal activating lock circuit and time-base control circuit in the sound wave receiving circuit to take the initial signal of back wave as the valid one in the cycle, thus to improve the ratio of signal vs. noise and detective precision.

在超声波接收电路中设有信号触发锁定电路和时基控制电路。实现以各探头中最早收到的回波信号为本检测单元的有效信号，有效提高信噪比和检测精度；

This paper introduces the application of with direct reading electronic gauge high precision, high distinguish ratio in the test of micro fracturing and injection/ falloff test in the coal seam bed. It extends the application field of ground direct reading test system and DST test technology.

介绍了具有高精度、高分辨率的地面直读式电子压力计在煤层气微破裂试验、注入/压降测试中的应用，拓宽了地面直读测试系统、DST测试技术的应用领域。