查询词典 uncertainty

The uncertainty given is the expanded combined uncertainty and represents an estimated standard deviation equal to the positive square root of the total variance of the uncertainty of components.

The不确定性是膨胀的联合的不确定性并且代表估计的标准偏差相等与组分不确定性的总变化的正面方根。

A preliminary analysis of calibration data shows that the uncertainty of the spectral irradiance measurement in the quartz tungsten halogen lamp and the uncertainty in distance measurement are the major factors of uncertainty in the sphere calibration technique.

初步的定标数据分析显示，石英卤钨灯光谱辐照度测量的相对不确定度和距离测量的不确定度是积分球定标最主要的不确定度来源，可用于紫外波段光谱辐射计的高精度辐射定标，并可以极大地降低定标不确定度。

This paper introduces the principle and unit of measurement of turbidimeter,a kind of instrument used to measure the content of undissolved particulate matter suspending in water or other transparent liquid.In this article the measurement uncertainty of relative indication error in the method recommended in verification regulation of turbidimeter(JJG880-1994)for turbidimeteris estimated.The sources of standard uncertainty component are analyzed in detail.The combined standard uncertainty and effective degree of freedom are calculated.

本文介绍了用于测量悬浮于水中的不溶性颗粒物质含量的仪器浊度计的测量原理和计量单位，并依据计量检定规程（JJG 880-1994）中检定示值相对误差的方法，对示值相对误差的测量结果进行不确定度评定，具体分析了各个不确定度分量的产生，并合成标准不确定度及有效自由度。

Based on the evaluation principle of uncertainty in GUM (Guide to the Uncertainty in Measurement), the paper studies on the evaluation of uncertainty based on the Bayesian theory .

根据现在通常使用的《测量不确定度表示指南》的基本原理，本文以贝叶斯理论为基础，对测量不确定度的评定方法进行了研究。

The results are compared with IDMS results, which indicate that they are accordant. The uncertainty analyses include each uncertainty factor in whole experiment and the uncertainty of used certified reference material and it shows that the procedure blank is not neglectable to detect limit and precision of the method.

方法的不确定度分析包含了实验过程中每个步骤所产生的不确定度和使用的标准物质的不确定度，其中，流程空白对方法检测限和精密度的影响不容忽视。

The uncertainty problems in dam safety monitoring were studied in this dissertation. Based on regarding dam and its bedrock as an uncertainty system, the international actuality of correlative research was reviewed, and then closely combining with engineering practice, umpty analyses methods and their applications for uncertainty problems in dam safety monitoring were studied.

以大坝安全监控中的不确定性问题为研究对象，在综论国内外有关研究现状的基础上，将大坝及其坝基看作是受诸多不确定性因素影响的不确定性系统，并在此基础上紧密结合工程实际，对大坝安全监控中若干不确定性问题的分析方法与应用进行了深入研究。

The parametric uncertainty is considered to denote the uncertainty in structure,and both parametric form and unmodeled dynamics are used to represent the influences and mechanism of uncertainty in unsteady aerodynamic forces.

将结构的不确定性考虑为参数形式，非定常气动力的不确定性考虑为参数和未建模动态两种形式，建立了不确定系统的线性分式变换模型。

The paper brings forward the conception of command decision-making in space war and it~′s uncertainty,gives methods and gist to compartmentalizing the uncertainty problem about command decision-making in space war.Furthermore,from the point view of composing elements,the uncertainty factor about decision-maker,decision-making tool and decision-making inf...

提出了空间作战指挥决策与空间作战指挥决策不确定性的概念；给出了划分空间作战指挥决策不确定性问题的方法、依据；从组成要素的角度，研究了决策主体、决策工具、决策信息中存在的不确定性因素，以及对空间作战指挥决策的影响。

According to the request of national regulation of verification of JJG259-1989 Standard Metal Tank and national technical specification of JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement, the author adopted Type A and Type B uncertainty of evaluation methods. Standard uncertainty comes from various heft,liquid location difference in height of verified capacity measure,capacity of Gauge neck,difference in height of liquid location of gauge neck and standard capacity measurement.

根据JJG2591989《标准金属量器》国家检定规程和JJF1059-1999《测量不确定度评定与表示》国家技术规范的要求，通过采用不确定度A类和B类评定方法，具体分析包括被检量器的液位高度差，计量颈容量，计量颈液位高度差，标准金属量器等分量的产生及所引入的不确定度分量，从而获得标准金属量器测量结果的扩展不确定度。

There are many influences for relation's uncertainty in spatial reasoning, and the three most important influences are the data uncertainty and acquiring difficulty of relation information and result uncertainty of spatial reasoning.

空间推理问题的不确定性的主要原因是数据的不确定性、关系提取的困难性和推理过程的不确定性，这三种不确定性因素都影响到了地理空间推理中的地图目标空间关系发掘和提取，同时，计算的复杂性也是影响地理空间推理系统应用的一个重要因素。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。