查询词典 negative

Results It was verified that the rate of correct diagnosis for the malignant tumor was 90%,false negative rate was 10%,false positive was not found. The rate of correct diagnosis for the benignant disease was 75% and false negative rate was 25%.

结果 恶性肿瘤确诊率为90%，假阴性率为10%，无假阳性病例；良性病变确诊率为75%，假阴性率为25%；总确诊率为85%。

Through experimental researching and analyzing the function characteristics of the photoelectronic negative device bistable circuit loaded as resistance author designs the photoelectronic coupler among the application study on the photoelectronic negative devices.

本文作者在光电负阻器件的应用研究中，通过实验研究和分析以电阻作为负载的光电负阻器件双稳态电路性能特点而引发构思出了非线性光电耦合器。

Conventionally, a negative dependence structure is not allowed in bivariate poisson models, and it restricts the univariate marginal distributions has to be the same family as the bivariate joint distribution, On the contrary, copulas allow negative dependence structure and marginal distributions and bivariate distributions of different families .

相较之下Copula允许有负相关，且Copula是一个能将双变量的联合分配函数与各自的边际分配连接在一起的函数。

Although 1 C formation method increased the battery capac-ity and the negative electrode's ability to absorb O2, it brought negative effects on the performance of high rate discharge, cycle life and uniformity. In the mean time, the performance of the batteries, produced by 0.5 C formation method, was well except for capacity.

指出采用较大电流开口化成制度，虽然可以提高电池的容量及负极氧复合的能力，但对大电流放电性能、循环寿命及电池的均匀性等都带来十分不利的影响；而采用0.5 C开口化成制度的电池，除了容量略低外，其它性能均很好。

Carbon bisulfide was the main poison in the hydrogenation reaction of conjugated double bond of styrene and the negative effect increased with the increase of carbon bisulfide content; the negative effect decreased with the increase of reaction temperature.

二硫化碳是苯乙烯中共轭烯烃加氢快速失活的主要硫化物。随着二硫化碳含量的增加，苯乙烯中共轭烯烃加氢活性下降程度增大；随温度升高，其加氢活性下降程度减小。

That is, it is a kind of higher level negative to negative of cash basis accounting.

可以这么说，这是对现金制会计的一种更高水平的否定之否定。

This paper combines with pipeline delivery of our countrys actual conditions and other methods of detection and location. To the leakage characteristic of the fault to the long-distance natural gas pipeline, a method is raised, which is on the basis of wavelet and negative-pressure-wave to detect the leakage and locate. Jobs in this paper are as follows:Multi-resolution decomposition and reconstruction of wavelet transform is utilized to filter the noises, which the leakage brings the noises of negative-pressure-wave. The research is worked in the wavelet and wavelet packet filter. The wavelet transform have a fast and accurate recognition capability to signal singularity. This paper chooses wavelet technology to catch the break point of pressure signal.

本文结合我国管道输送的实际情况和目前现有的各种泄漏检测与定位方法，针对天然气长输管线泄漏故障的特点，提出了基于小波分析和负压波相结合的方法检测泄漏并定位，其中主要进行了以下几个方面的工作：利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行降噪处理，并对小波及小波包优化的降噪效果进行对比性研究；利用小波变换技术对信号奇异点的快速、准确的识别能力，捕捉负压波信号的突变点，从而判断是否有泄漏发生。

Because the temperature along the pipeline is not a constant, it changes the velocity of the negative-pressure-wave; the Romberg algorithm of numeric integral and the searching for algorithm are emloyed to locate the leakage.Multi-scale decomposition and reconstruction of wavelet transform is applied to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of Δt in location formula, and the location accuracy is improved.

利用小波变换的多分辨分析和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行了消噪处理；并利用小波变换技术对信号奇异点快速、准确的识别能力，对经过消噪处理后的负压波信号进行了奇异点捕捉，准确确定了定位公式中上、下游站点采集到的负压波奇异点的时间差△t，从而提高了定位的精度。

The Chondrite normalized REE pattern shows typical enrichment of LREE, with ∑REE peaking up to 318 mg kg^(-1) in central layer of the profile. Both Ce and Eu have a similar trend of variation in the profile, i.e. positive anomaly-negative anomaly-positive anomaly from bottom to top. The highest ∑REE value occurs where negative Ce and Eu anomaly and relatively higher Fe(superscript 2+)/Fe(superscript 3+) values also occur.

剖面稀土元素分布型式为轻稀土富集型，∑REE在风化壳中部达到最高值318 mg kg^(-1)，剖面上Ce和Eu均呈正异常－负异常－正异常变化趋势，∑REE最高值出现在Ce和Eu负异常和Fe(上标 2+/Fe(上标 3+)较高层位，∑REE与Fe2O3显著正相关。

Since the force of friction and the velocity of a particle are directed oppositely, then the work of the force of friction on each part of the path is negative:Therefore, the work along any closed path will also be negative.

因为摩擦力量和微粒的速度直接反对，然后摩擦力量的工作在道路的每个零件的是消极的：所以，沿所有闭合的道路的工作也将是消极的。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。