平均偏差

In this paper, effects of atmospheric factors to Ka-Band earth-space links are analyzed, and the total fade distribution function is derived. With the scintillation prediction model, monthly averaged standard deviations and monthly percentage time averaged fade of scintillations for some of referential earth stations of our country are computed.

摘要本文分析了各气象因素对Ka-波段地空链路衰减特性的影响，得出了链路综合衰减分布函数，利用闪烁预测模型计算了全国各参考站点的闪烁月平均标准偏差和月百分比时间平均衰减值。

The relative error of accuracy is 0.21%, the precision of relative windage is 0.24%, and the recovery rate is 99.93%.

其准确度平均相对误差为0.21%，精密度平均相对偏差为0.24%，方法回收率为99.93%。

As results showed, for limonin and naringin, the linearity was good within the ranges of 1.00-50.00 mg/L (r=0.9992) and 20.00-160.00 mg/L (r= 0.9988) respectively, and the detection limits were 0.07 μg and 0.14 μg, then the average recoveries were 98.69% and 100.13% with relative standard deviations of 2.5% and 1.5%, respectively.

实验结果表明，柠檬苦素在1.00～50.00 mg/L时线性关系良好(r=0.9992)，检出限为0.07 μg，平均加标回收率为98.69%，相对标准偏差为2.5%；柚皮苷在20.00～160.00 mg/L时线性关系良好(r=0.9988)，检出限为0.14 μg，平均加标回收率为100.13%，RSD为1.5%。

Based on the principle that there exists an equal pressure drop for a tube with average parameters and another one with deviation parameters the authors have worked out an iterative procedure for determining the flow rate deviation factor η 1 of a boiler water wall.

根据平均管与偏差管压降相等的原理，在考虑汽水两相摩擦阻力压降与局部阻力压降的基础上，建立了水冷壁流量偏差系数ηl 的迭代求解方法。

The average recoveries for lincomycin and clindamycin ranged from 80% to 110% in replicate sets of honey samples spiked with the drug concentrations of 1.0, 5.0 and 20.0 μg/kg, and the relative standard deviations were less than 8% for intra-day and 15% for inter-day determinations.

在1.0，5.0，20.0 μg/kg 3个添加水平，两种抗生素的平均回收率范围为80%～110%，日内测定结果的相对标准偏差小于8%，日间测定结果的相对标准偏差小于15%。

To reduce or remove size effect, the size classification elimination method, volume average method and normalization method based on volume were presented and the calibration and prediction results indicate that these three methods could reduce or remove the size effect effectively. The normalization method is more suit to in-line application and obtained better calibration and prediction results with the r of 0.789, 0.858 and 0.947, the RMSEC of 0.596, 0.499 and 0.313, and the RMSEP of 0.606, 0.686 and 0.413 than the results without normalization with the r of 0.716, 0.793 and 0.848, the RMSEC of 0.678, 0.592 and 0.515 and the RMSEP of 0.825, 0.764 and 0.714 for the original spectra, the first derivative spectra and the second derivative spectra with soluble solids content using partial least square method , respectively. 4. Owing to much thick skin of watermelon, contrast experiment was conducted in skin-peeled watermelon and intact watermelon to compare the influence of skin on spectra.

针对西瓜果型大且差异显著的特点，研究果型差异对可见／近红外光谱以及建模与预测结果的影响，并提出三种方法消除或减小这一影响因素，分别是分级消除法、体积平均法和基于体积的正则化方法，其中基于体积的正则化方法，更适合在线生产应用，该方法使果型大小差异明显样品的原始光谱、一阶微分光谱、二阶微分光谱在对可溶性固形物含量检测时，采用偏最小二乘法的建模与预测结果由原来的校正相关系数r分别为0.716、0.793、0.848提高到r分别为0.789、0.858、0.947，均方根校正标准偏差RMSEC由原来的0.678、0.592、0.515分别降为0.596、0.499、0.313，均方根预测标准偏差RMSEP由原来的0.825、0.764、0.714分别降为0.606、0.686、0.413； 4。

The Molecular Interaction Volume Model is introduced for the prediction and fitting of the activities of liquid alloys Ni-Mg-Cu,Ni-Al-Si and Ni-Cu-Co in the ternary systems.

对Ni-Mg-Cu，Ni-Al-Si及Ni-Cu-Co三组三元系预测的总平均相对误差及最小的拟合总平均相对偏差分别为12.0%和9.0%，表明分子相互作用体积模型比较适用于这类液态合金的活度预测

In this paper, effects of atmospheric factors to Ka-Band earth-space links are analyzed, and the total fade distribution function is derived. With the scintillation prediction model, monthly averaged standard deviations and monthly percentage time averaged fade of scintillations for some of referential earth stations of our country are computed.

摘要本文分析了各气象因素对Ka-波段地空链路衰减特性的影响，得出了链路综合衰减分布函数，利用闪烁猜测模型计算了全国各参考站点的闪烁月平均标准偏差和月百分比时间平均衰减值。

In this paper, effects of atmospheric factors to ka-band earth-space links are analyzed, and the total fade distribution function is derived. with the scintillation prediction model, monthly averaged standard deviations and monthly percentage time averaged fade of scintillations for some of referential earth stations of our country are computed.

本文分析了各气象因素对ka-波段地空链路衰减特性的影响，得出了链路综合衰减分布函数，利用闪烁预测模型计算了全国各参考站点的闪烁月平均标准偏差和月百分比时间平均衰减值。

In this paper, effects of atmospheric factors to Ka-Band earth-space links are analyzed, and the total fade distribution function is derived. With the scintillation prediction model, monthly averaged standard deviations and monthly percentage time averaged fade of scintillations for some of referential earth stations of our country are computed.

摘要本文了各气象因素对Ka-波段地空链路衰减特性的，得出了链路综合衰减分布函数，利用闪烁预测模型了全国各站点的闪烁月平均标准偏差和月百分比时间平均衰减值。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。