查询词典 coefficient of variation

The spatial-temporal distribution of NPP along NECT and its response to climatic change were also analyzed. Results showed that the change tendency of NPP spatial distribution in NECT is quite similar to that of precipitation and their spatial correlation coefficient is up to 0.84 (P.01). The inter-annual variation of NPP in NECT is mainly affected by the change of the aestival NPP every year, which accounts for 67.6% of the inter-annual increase in NPP and their spatial correlation coefficient is 0.95 (P.01). The NPP in NECT is mainly cumulated between May and September, which accounts for 89.8% of the annual NPP. The NPP in summer accounts for 65.9% of the annual NPP and is the lowest in winter. Recent climate changes have enhanced plant growth in NECT. The mean NPP increased 14.3% from 1980s to 1990s. The inter-annual linear trend of NPP is 4.6 gCm^(-2)a^(-1), and the relative trend is 1.17%, which owns mainly to the increasing temperature.

结果表明：(1)NECT样带植被NPP的空间变化趋势同降水量的空间变化十分相似，由东到西逐渐降低，二者在空间上的相关性达到了0.84 (P.01)，说明NECT样带的植被NPP在空间分布上主要受水分趋动：(2)NECT样带植被NPP的年际变化主要是由各年份夏季NPP的变化造成的，夏季对NECT样带植被NPP的年际增长贡献率最大(67.6%)，二者之间的相关性达到了0.95 (P.01)；(3)NECT样带的植被NPP积累期主要发生在5-9月份，这5个月的NPP占了全年NPP总量的89.8%，整个夏季（6-8月份）的NPP占了全年的65.9%，冬季（12-2月份）的NPP最低，基本为0；(4)近19年来的气候变化促进了NECT样带的植被生长，从1980年代到1990年代，NPP显著增加，年代际相对增长率为14.3%，平均年际绝对增长趋势为4.6 gCm^(-2)a^(-1)，相对增长趋势为1.17%，这主要是由温度升高引起的。

The spatial-temporal distribution of NPP along NECT and its response to climatic change were also analyzed. Results showed that the change tendency of NPP spatial distribution in NECT is quite similar to that of precipitation and their spatial correlation coefficient is up to 0.84 (P 0.01). The inter-annual variation of NPP in NECT is mainly affected by the change of the aestival NPP every year, which accounts for 67.6％ of the inter-annual increase in NPP and their spatial correlation coefficient is 0.95 (P 0.01). The NPP in NECT is mainly cumulated between May and September, which accounts for 89.8％ of the annual NPP. The NPP in summer accounts for 65.9％ of the annual NPP and is the lowest in winter. Recent climate changes have enhanced plant growth in NECT. The mean NPP increased 14.3％ from 1980s to 1990s. The inter-annual linear trend of NPP is 4.6 gC·m-2·a-1, and the relative trend is 1.17％, which owns mainly to the increasing temperature.

结果表明：(1)NECT样带植被NPP的空间变化趋势同降水量的空间变化十分相似，由东到西逐渐降低，二者在空间上的相关性达到了0.84(P《0.01)，说明NECT样带的植被NPP在空间分布上主要受水分趋动；(2)NECT样带植被NPP的年际变化主要是由各年份夏季NPP的变化造成的，夏季对NECT样带植被NPP的年际增长贡献率最大(67.6％)，二者之间的相关性达到了0.95(P《0.01)；(3)NECT样带的植被NPP积累期主要发生在5-9月份，这5个月的NPP占了全年NPP总量的89.8％，整个夏季(6-8月份)的NPP占了全年的65.9％，冬季(12-2月份)的NPP最低，基本为0；(4)近19年来的气候变化促进了NECT样带的植被生长，从1980年代到1990年代，NPP显著增加，年代际相对增长率为14.3％，平均年际绝对增长趋势为4.6 gCm-2(a-1，相对增长趋势为1.17％，这主要是由温度升高引起的。

The differentiation coefficient is 0.07 between three inbreed families respectively. The highest level of genetic homozygosity is in families Ⅱ at 18, but genetic variation is a little difference between inbreeding pig and mice. However, this study revealed the pattern of genetic variation at microsatellite loci in the 3 inbred families of WZSP with one of the most important findings to be the high level of unexpected heterozygosity at some loci, e.g. Sw874 and Sw936 that could be part of the unique genetics of three families. A hypothesis is that certain functional genes linked with such microsatellite loci may be involved in the maintenance of viability of these inbred families of WZSP remains for further investigation.

随近交代数的推进，每个星座上等位基因数越来越少，基因的纯合度越来越高，但WZSP近交系微卫星等位基因的纯合度有一定的限度，与近交鼠有所不同；在近交系3个家系各个世代中有少数几个基因座，如Sw874和Sw936等一直处于高度杂合状态，这可能与WZSP近交家系的种质特异性有关，推测与这些基因座处于同一连锁群的某些功能基因在维持极高近交水平下WZSP的基本生存能力中起着关键作用。3个近交群体间的分化系数在0.07以上，已各自成为独立家系；3个家系的近交程度不完全一致，基因的纯合度亦不同，Ⅱ系最高、14个微卫星座中7个纯合，其次为Ⅰ系和Ⅲ系。

The analytic method of new miticide F1050 was studied in this paper. The method of HPLC was good for the determination of F1050.The relative coefficient, variation coefficient and recovery were 0.9999, 0.20－0.24%, 99.24－99.83% respectively.

研究了新杀螨剂 F1050的分析方法，采用高效液相色谱法分析F1050原药及15%乳油，分离完全，回归方程的相关系数为0.9999，方法的变异系数为0.20%－0.24%，回收率为99.24%－99.83%，结果较满意。

Angular spectral is spectral value map formed by estimating semblable coefficients of fast and slow shear wave or the variation of amplitude ratio of fast and slow shear wave with times and angles at a specified space point based on semblable theory of fast and slow shear wave, the angle value of this space point at a given time can be got by picking the maximum of angular spectral; the study reveals that fast and slow shear wave with different polarization direction should be separated using different rotation formula, eight formulas of separating fast and slow shear wave using clockwise rotation and counterclockwise rotation have been derived, and gained energy assignment rule and phase coincidence rule, in real data estimation, the rotation formula used for separating fast and slow shear wave can be uniquely determined on the two discriminating rules. On the basis of semblable theory of fast and slow shear wave, the delay time corresponding to the maximum of semblable coefficients at a specified point in a given time window is the delay time of fast and slow shear wave, delay time section of fast and slow shear wave can be got by moving space point and smoothing time window. The vertical variation values of delay time of fast and slow shear wave reflect the effect degree of vertical fractured reservoir on fast and slow shear wave which is defined as anisotropic coefficient, and section map of anisotropic coefficient can be obtained.

角度谱就是利用快慢横波的相似性原理，在某一空间点求出快慢横波的相似系数或快慢横波的振幅比值随着时间和角度的变化而形成的谱值图，拾取其极大值就得到该空间点某一时间的角度值；在研究中发现分离不同偏振方向的快慢横波应该采用不同的旋转公式，推导出了利用顺时针旋转和逆时针旋转分离快慢横波的八个公式，并给出了能量分配准则和相位一致性准则两个判别准则，在实际计算中利用这两个判别准则能唯一地确定分离快慢横波的旋转公式；根据快慢横波的相似性原理，在某一给定点和给定时窗内最大相似系数对应的延迟时间就是快慢横波的延迟时间，随着空间点的移动和时窗的滑动就可以得到快慢横波延迟时间的剖面图；快慢横波延迟时间与慢横波传播时间的比值定义为裂缝密度，并求出了裂缝密度剖面图；快慢横波延迟时间纵向上的变化值的大小反映了纵向上裂隙层对快慢横波影响的大小，定义为各向异性系数，并求出了各向异性系数的剖面图。

Due to the difference of heat conduction coefficient, specific heat capacity and expansion coefficient between concrete and rock, under cyclic variation of temperature, the junction plane is liable to crack in the slope supported by shotcrete.

由于混凝土材料与岩土材料的热传导系数、比热容与热膨胀系数的差异，在温度的循环变化下使得喷射混凝土边坡容易于喷层与岩土层的结合面处产生应力集中而开裂。

Finally, twelve monthly binning secchi depth maps are build by using 1988 MODIS images from 2004 to 2007. The results show annual variation of secchi depth, absorption coefficient, and backscattering coefficient.

最后利用推估结果较佳的波段与关系式，将2004年至2007年共计1988张MODIS影像，叠合成1至12月份计12张台湾海域的沙奇盘深度推估影像，并分析其四年的变化，结果显示台湾海域的沙奇盘深度与吸收系数，以及背向散射系数皆有年的周期性变化。

It is suggested to reduce earthquake actions, that is to say, R=3.5. According to statistical processing and analysis of 23 examples, variation regularities of structural coefficient, ductility coefficient, overstrength coefficient and displacement amplification coefficient are acquired.

通过对23组算例统计分析，研究层数、跨度、竖向恒载和跨数对结构影响系数、延性系数、超强系数以及位移放大系数的影响规律。

Soil organic matter was high in Baoshan tobacco-growing areas and ranged from 1.50 g/kg to 148.10 g/kg with a mean of (32.43±12.38) g/kg and variation coefficient of 33.34%.

保山烟区土壤有机质含量较丰富，平均为(32.43±12.38)g/kg，变幅为1.50~148.10 g/kg，存在广泛的变异，其变异系数达33.34%。

This paper through indoor physical model experiments, studied the coefficient of permeability variation, a multiple of polymer solution into the pore volume, polymer molecular weight and polymer concentration on the remaining oil after polymer flooding potential and distribution.

本文本文通过开展室内物理模型实验，研究了渗透率变异系数、聚合物溶液注入孔隙体积倍数、聚合物分子量和聚合物溶液浓度对聚合物驱后剩余油潜力及分布的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。