在《清洁空气法案》强制要求美国使用无铅气体的二十年里，铅在世界范围内的累积量显著下降。
In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation worldwide has decreased significantly.
拔节期水分亏缺对干物质累积量影响最大。
Water deficit at jointing stage affected mostly dry matter accumulation.
本文还推导了具有一般形式的累积量方程。
The cumulant equation having generalized form was also derived in the paper.
故障计数标志开始累积，当达到设定的累积量后，故障报警。
The trouble counter starts accumulating, and failure warning sets in when reaching the pre-set cumulant.
本文首先引出地震子波估计和外推的最新方法—高阶累积量法。
The novel method of Estimation and extraction of seismic Wavelet-Higher order cumulants is presented in this thesis at first.
该法不仅有较高的计算效率，而且比传统累积量法有更好的精度。
It is not only efficient in computation but also more accurate than conventional cumulant methods.
随着雨强的增大、产流时间的增加，径流养分累积量也相应增大。
The cumulative quantity of runoff's nutrient increases correspondingly along with the more enhancing rainfall intensity and longer duration of runoff generation.
提出了基于加权高阶累积量切片的间接自适应谱线增强快速算法。
A fast algorithm of weighted HOC slice based adaptive dynamic line enhancer is established.
提出了一种基于频域高阶累积量的信号频率和到达角联合估计算法。
In this paper, a new cumulants-based method for the joint estimations of frequency and DOA of spatial signal was discussed.
以均匀直线阵和四阶累积量为基础，提出了一种新的空间特征盲估计算法。
Based on uniform linear array and fourth order cumulant, a novel blind algorithm for spatial signature estimation was presented.
在营养和生殖生长阶段旱稻茎含磷量和磷素累积量随水分胁迫程度加深而降低。
However, as the water stress increases, the phosphorus accumulation of root decreases at vegetative stage and reproductive stage.
图像熵和高阶累积量不需要参考图像，因此可以在实际的离焦分析中广泛应用。
The two parameters have good application in practical defocus analysis due to their independence of reference image.
文中给出了基于IEEE可靠性测试系统的算例分析以及同传统累积量法的比较。
Case studies based on IEEE Reliability Test System and the comparisons with conventional cumulant methods are given.
泥沙氮素含量随着产流时间的延长呈下降趋势，而流失累积量测呈逐渐增大趋势。
With delay of runoff yield time, the nitrogen concentrations in runoff and sediment drop off, whereas, the accumulation amounts of nitrogen loss rise gradually.
阐述了三阶累积量时延估计方法基本原理，并将该方法用于断层检测和落差估计。
The principle of third-order accumulation method is used to detect fault and estimate the throw of fault.
土壤干旱胁迫导致游离脯氨酸大量累积，抗旱品种(种)比不抗旱的累积量要大。
Under soil drought stress conditions, drought - resistant varieties (species) accumulated comparatively higher free proline content than those in the less drought - resistant varieties.
图6碳烟累积量与压降增量的关系，随着碳烟的增加，压降明显增加，呈线性关系。
Figure 6 is the relation between soot cumulant and pressure drop increment, as soot increases, pressure drop increases obviously, in linear relation.
针对这一情况，本文提出了一种使用四阶累积量对角切片检测舰船辐射噪声的方法。
Contrapose this phenomenon, a new method based on fourth-order cumulants diagonal slice for detecting ship-radiated noise is presented.
最后通过定义一个特殊的四阶累积量提取加性高斯有色噪声中的方向角、多普勒频率。
A special four order cumulant was defined to extract DOAs and Doppler frequencies from additive Gaussian colored noise.
文章还探讨了本食物链各环节积累铜的主要途径以及影响生物个体铜的累积量的诸因素。
The transport approaches of copper in seawater and in this food chain, as well as some factors affecting the copper quantity accumulated by organisms were discussed.
一心一意听过一个新片段上之后，我复习所有听过的旧片段，这样我就能够消化越来越长的语言累积量。
After focusing intensely on a new episode, I review all the old ones, so that I am able to digest longer and longer cumulative doses of the language.
通过聚焦操作，把各个窄带频率处的阵列输出矢量变换到聚焦频率处，然后求其累积量矩阵。
By focusing operation, array output vectors at different frequency bins are transformed to focusing frequency and individual cumulants matrix is got.
研究表明：复数信号的五阶累积量是提取四次相位耦合分量、二三对相位耦合分量的必要工具。
The result shows that the quartic phase coupling component and quadratic-to-cubic phase coupling one are only extracted using the fifth order cumulants of complex signals.
研究表明：复数信号的五阶累积量是提取四次相位耦合分量、二三对相位耦合分量的必要工具。
The result shows that the quartic phase coupling component and quadratic-to-cubic phase coupling one are only extracted using the fifth order cumulants of complex signals.
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