平均值

Results of estimation of effective parameters in heterogeneous show that: i Seff and Teff values evolve with time, as well as the principal directions of the transmissivity; ii Seff approaches the arithmetical mean of the field; iii Teff converges to its geometric mean at large time for the Gaussian random field we generated; and iv the averages of local T and S values within the cone of depression at early times differ from the Teff and Seff values.

研究结果在空间异质性孔隙介质有效参数的推估方法方面，显示利用传统抽水试验分析来估计有效参数时，从长时间的抽水试验分析所得的流通系数代表在抽水井有效半径内所有流通系数的某种平均值；此平均值与抽水井及观测井附近的地质有很大的关系，而且可能受到有效半径内地质异质性的影响，而储蓄系数的估计值变异很大与抽水井与观测井间地质的储蓄系数特性有关，特别是观测井的位置。

The average of hearing threshold shifts at high frequencies(4k, 6k, 8kHz) is considerably larger than that at low frequencies(0.5k, 1k, 2k Hz). The moderate to severe degree of hearing loss of the paper mill workplace of subjects showed maximum notches at the frequency of 4 kHz. The noise-exposure group grades of DNA damage were significantly higher then the controls.

经扣除年龄老化因素所得到的听力损失修正值，结果显示在谈话性低频率0.5KHz、1 KHz中，女性比男性听力损失严重，并以女性、≧50岁、右耳、1 KHz 之平均值39.0±17.2dB为最高值，而於高频率2KHz至8 KHz中，不同年龄层之比较，以男性、≧50岁、右耳、8KHz之平均值49.0±27.1dB为中度至重度听力损失情形。

The mean, maximum and minimum value of the area of transverse section and the major axis length of ellipse and the maximum centroid displacement can be used to discriminate width of pulse tracing.

长轴长度周期平均值、最大值、最小值，面积周期平均值、最大值、最小值，以及轴心在平行于皮肤表面的最大位移等参数可以作为初步判别脉宽的参数。

Truncated normal distribution with population means from 100,000 to 2,500,000 and different standard deviations from 2/3, 2/4, 2/4,2/5,2/6 to 2/7 of means, were used to estimate the cumulated frequency of the SCC of bulk milk.

假设场总乳体细胞数平均值变数源自一截去单尾的常态分布，模拟族群平均为 10万到 250万，标准偏差为平均值的 2/3， 2/4 ，2/5， 2/6至 2/7，来估计总乳的SCC 累积频率。

On the dawn side of the plasma sheet, the average of Vx and Vz are nearly equal to 0,but the average of Vy is in the order of －10 km/s.

在黎明侧的等离子体片区， Vx和Vz的平均值约为0，但Vy的平均值的量级为-10 km/s。

The amount of drainage in 1998-1999 was caudated by the equation, the average was 149.4mm, the maximum value was 197.5mm and the minimum was 93.1mm, coefficient variability was 2.9%. The average amount of drainage in 1999-2000 was 286.4 mm, the maximum value was 391.9 mm and the minimum was 193.9 mm, the maximum value was two times than minimum value, and CV was 6.4%.

通过上面建立的关系式，计算得到了1998-1999年10个小区的渗漏量，其平均值为149.4mm，最大值为197.5mm，最小值为93.1mm，变异系数为2.9％。1999-2000年的渗漏量平均值为286.4mm，最大值为391.9mm，最小值为193.9mm，最大值约是最小值的2倍，变异系数为6.4％。

In order to analyze the airborne LiDAR data corresponding to single trees and stand heights in the forestry area, we set up samples to measure tree heights of Alnus formosana, Cryptomeria japonica, and Chamaecyparis formosensis in the Alishan area. We build the Canopy Height Model based on the data from the airborne laser scanning system. Single Tree heights were estimated by averaging the CHM values within a 0.5m radius, and six different sizes of sample stands (5×5, 10×10, 12.5×12.5, 15×15, 17.5×17.5, and 20×20) were set up to extract the average heights within the area as the calculated value.

本研究於阿里山地区设置样区，针对台湾赤杨、柳杉、红桧等树种进行立木树高之量测，配合该样区之空载光达影像资料，建立树冠高度模型(Canopy height model， CHM)，探讨空载LiDAR在森林地区对於单木树高与林分高的量测情形；单株立木高系以样区立木位置为中心，萃取0.5 m 圆形环框范围内之CHM平均值为其推估值；光达林分高则以6种林分面积(5 m×5 m、10 m×10 m、12.5 m×12.5 m、15 m×15 m、17.5 m×17.5 m、20 m×20 m)萃取范围内之CHM平均值为其推估值。

As for sulfur isotopic composition, the general feature of two types deposits is a single peak distribution. All δ〓s values of the ores are near zero. The difference of different deposits lies in that the δ〓s values (1. 8-5. 2‰) of LDT are of small positive value and are similar to that of the metamorphic rocks and dioritic porphyrites in the region while the δ〓s values of SDT are always near zero. Features above suggest that two types of deposits have closely genetic relationship to metamorphic and magmatic rocks.

硫同位素组成上，两类金矿床共同的特征是均具有明显的单峰塔式效应，且δ〓S值均位于0值附近不大的变化范围内；不同的是，近程式金矿的δ〓S平均值均接近于0，与该类金矿具密切成因联系的岩体的δ〓S值也接近于0值，而远程式金矿的δ〓S平均值均为小的正值，变化范围为1.8～5.2‰，区内太古代变质岩及矿区内闪长玢岩脉的全岩δ〓S值位于这一区间内，反映了远程式金矿床其成矿物质不仅来源于重熔岩浆，同时还可能部分来源于变质岩围岩。

This paper emphasized on the strength testing of paper-bag which was produced by Foshan Sanshui KelunPaper.Inc. The test was done according to the Chinese Standards（GB/T453—2002、 GB/T450—2002、GB9774—2002 etc.）.It showed that , the average CD ensile strength of a single paper is 2.96KN/m, above the normal value of 2.0 KN/m; The average MD ensile strength of a single paper is 3.88 KN/m, above the normal value of 3.8 KN/m; The combined CD ensile strength is 7.88 KN/m, above the normal value of 6.0 KN/m; The combined MD ensile strength is 11.91 KN/m, above the normal value of 11.4 KN/m.

本文针对佛山三水科伦纸业公司生产的纸袋进行了强度方面的测试，根据国家标准（GB/T453—2002、GB/T450—2002、GB9774—2002等），借鉴厂内已有的检测方法，测出了该厂生产用纸单层的横向抗张强度的平均值为2.96 KN/m，高于行业经验值2.0 KN/m；纵向抗张强度平均值为3.88 KN/m，高于行业经验值3.8 KN/m；组合横向抗张强度为7.88 KN/m，高于行业经验值6.0 KN/m；组合纵向抗张强度为11.91 KN/m，高于行业经验值11.4 KN/m。

Fifty-seven kinds of polycyclic aromatic hydrocarbon were detected by qualitative method,and sixteen kinds of those were mensurated by quantitative method.The results suggested that the average concentration of chry was the highest,21.83 ng/m3;the average concentration of fluoranthene was the second highest, 21.14 ng/m3; the mass c...

并对16种多环芳烃定量测定，结果表明：以屈艹为最高，平均值为21.83ng/m3；荧蒽次之，平均值为21.14ng/m3；苯并芘的质量浓度为14.52ng/m3，不满足GB3095-96中的质量浓度限值。2001～2003年检测结果对比表明，部分监测点空气中多环芳烃的浓度有下降的趋势。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。