显著性水平

The significance level of a test is the probability of a Type I error.

一个检验的显著性水平是发生第一类错误的概率。

The statistical maths analysis and sample distribution assumption tests of four factors, i.e., pipe earth potential, cathodically protected potential, corrosion current density of 16Mn mild steel in soil and coating resistance have been accomplished.

根据表征输油管线运行状态的四项参数即管地电位、阴极保护电位、土壤腐蚀性以及防腐层电阻建立了统计分布模型，并对新老管线数据分布模型的均值和方差进行了显著性水平检验。

After transforming the profession and blood type into dunny variable, it was suggested that peasan, technology personnel and A blood type were correlation with HCC, which OR values were 1.613,0.520, 1.867, respectively.

饮酒、HBsAg、HBeAg、HBeAb、HBeAg、HBeAb等因素与肝癌发病的关系，在单因素分析中达到了显著性水平，但均未能进入多因素分析的Logistic回归模型，有待进一步研究。

It is indicated that: 1 at evidence level of 0.01, the chaffs dynamic RCS presents chi-square distribution at S-band and X-band; 2 the density of chaff cloud would decrease with time, which will result in lower RCS; and 3 with increasing of frequency and decreasing of wavelength, the coherence effect between different chaffs would get less, which will result in weaker fluctuation.

结果表明，当显著性水平为0.01时，该箔条云在S波段和X波段的动态RCS服从χ^2分布；箔条云形成之后，箔条密度随着时间的推移而下降，导致其RCS减小；随着频率升高而波长减小，箔条间互耦效应将减小，箔条云RCS的起伏也将减小。

First acts according to the asphalt pavement the light thermal environment, has established the asphalt road surface thermal equilibrium equation, to affect the asphalt pavement surface thermal equilibrium temperature each factor level of significance to carry on the analysis, discovered in order to reduce the asphalt pavement surface thermal equilibrium temperature the feasible technical route.

首先根据沥青路面的光热环境，建立了沥青路表面的热平衡方程，对影响沥青路面表面热平衡温度的各个因素的显著性水平进行了分析，以求找出降低沥青路面表面热平衡温度的可行技术路线。

The main results obtained are as follows:(1) Pineal melatonin content exhibited a circadian rhythm in pikas maintained in natural photoperiod conditions (P.001) both in Feburary and September.

在10月份的检测中，白天采样组鼠兔松果腺MLT含量的均值为：95.8±6.8微微克/松果腺（n=28），夜间组为316.1±30.1微微克/松果腺（n=32），二者的差异显著性水平为（P.001）。

The Sulphur content in the plant was increased based on the Sulphur application.

三种作物在施用氮磷钾的基础上施硫，其植株的含硫量均表现有所增加，棕壤土上油菜的含硫量增加22.1％；潮土上四季萝卜块根的含硫量增加8.7％，达到显著性水平。

It is shown that PTDT is a robust and valid approach for mapping QTL of threshold traits. Moreover, PTDT is powerful for marker with multiple alleles and multiple tightly linked markers, too. From the results of simulation on quantitative traits, following conclusions can be derived.

结果表明：(1)PTDT是一个稳健的QTL定位分析方法，在各种参数组合下，其假阳性概率(1型错误)都在设定的显著性水平附近；(2)PTDT不仅可以检测到效应较大的QTL，而且对效应较小的QTL检验功效依然很高；(3)对各种状态1发生率的阈性状PTDT检验功效也很高；(4)对利用多等位基因标记、多个紧密连锁的标记的QTL定位，PTDT依然是一个高效方法。

Although there was a trend that favored VoLumen (E-Z-EM, Lake Success, NY) when the abdominal contrast studies were independently read by two radiologists, those differences failed to reach statistical significance, she said.

当两位放射学家独立阅片时，阅片结果显示VoLumen对比效果有更好的趋势，但是没有达到统计学上的显著性水平。

Although there was a trend that faored oLumen (E-Z-EM, Lake Success, NY) when the abdominal contrast studies were independently read by two radiologists, those differences failed to reach statistical significance, she said.

当两位放射学家独立阅片时，阅片结果显示oLumen对比效果有更好的趋势，但是没有达到统计学上的显著性水平。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。