查询词典 accuracy of measurement

Based on the concept of antenna near-field measurement and the theory of plane wave spectrum, the theory of plane near-field measurement and error analysis are introduced, two errors of plane radiation near-field measurement are discussed in detail: the probe positioning error and the truncation error of finite scanning.

本文从天线近场测量的基本概念出发，以平面波谱理论为基础，介绍了平面近场测量理论及其误差分析方法。

To measure facial soft tissue we can use direct measurement,radiation measurement , ultrasohometry measurement etc.

用X线的方法测量较为方便且测量结果可靠，能为多数学者接受[25，26]。

The paper analyzes the shortage of traditional roadway measuring wind method,and by theoritical calculation of measurement,the wind amount is tested,and the roadway fixed central point method of wind measurement and the roadway s average wind velocity fixed-point method of wind measurement are proposed,and which solve the problem of low wind velocity and low credibility well.

分析传统井巷测风方法的不足，并通过风量测定的理论计算和对现场风量进行实际验证，提出了井巷中心点定点测风法和井巷平均风速点定点测风法，较好地解决了当前测定风速慢、可靠性差的问题。

However, because of the positive sequence of fundamental frequency, there are still some shortages for wavelet transform in the use of harmonic measurement of three-phase dissymmetrical system. A new approach of harmonic measurement based on Period-interleaving of MALLAT arithmetic for dissymmetrical system is put forward. Analysis and experiment based on TMS320LF2407 Digital Signal Processor are made. And the result of experiment reveals that the proposed method based on Period-interleaving is valid in the use of harmonic measurement of three-phase dissymmetrical system.

但是，目前小波变换在三相不对称系统的谐波检测中存在着无法分离基波正序信号的不足，本文就此提出了一种用于三相不对称系统的基于周期交错的小波MALLAT多分辨率分解的测量方法，详细介绍了该算法的原理、流程及计算公式，同时以TMS320LF2407数字信号处理器为核心建立了实验系统对该算法进行了实验，实验结果证明该周期交错－小波变换算法可以有效地检测出三相不对称系统中的有害电流。

This paper introduces the principles of the gravity measurement ,probes into the application of the gravity measurement in the dynamic monitoring of the mine drainage,and advance the design thought of the dynamic measurement gravimeter.

介绍了重力测量的原理，探讨了重力测量在矿井水动态监测中的应用，提出动态测量重力仪的设计思想。

Therefore, the authors suggested that a coefficient of correction for correcting height index measurement error should be established when the height is measured in the afternoon, so as to enhance measurement efficiency and measurement objectivity.

青少年身高在一日中发生变化，因此，在下午测量时，为了提高测试效率及测量的客观性，建议制定修正身高指标测量误差的系数。

At the same time we introduce the measurement management innovatively that include the measurement to process oneself and measurement to the products.

同时创新的引入度量管理，包括对过程自身的度量和对产品的度量，对整个项目的定量化管理中起到了至关重要的作用。

The Electrochemical measurement system used to perform DPSV measurement is constructed with two parts, a low-current measurement system consists of low input bias current operational amplifier and a high resolution SAR ADC and a potentialstat consists of high resolution DAC and high current buffer amplifier.

对于差分脉冲伏安溶出测量，我们使用高精度连续逼近寄存器型ADC和低偏置电流运放构成微电流采样系统；使用高精度DAC和高速大电流缓冲放大器构成了恒电位计，在微控制器的控制下组成电化学测量系统。

International System of Units measurement units and other units of measurement nationally selected for the state's legal units of measurement.

国际单位制计量单位和国家选定的其他计量单位，为国家法定计量单位。

Article 6 The measurement units of international unit system and other measurement units designated by the state are the state legal measurement units.

第六条 国际单位制计量单位和国家选定的其他计量单位是国家法定计量单位。

Through a study of nearly 1000 pairs of identical and non-identical twins, British and Australian researchers found genes control half the personality traits that make people happy.

英国和澳大利亚科学家通过对将近1000对双胞胎的研究发现，人类的快乐情绪一半是由基因控制的。

The knight unsheathed his sword.

骑士拔出了他的剑。