平均值

Moreover,thc rationality about calculating tolerance unit by using the grometrical average is discusscd in comparison with relative reeor by using the midline value which is in a basis diameter step.

本文给出了几何平均值与算术平均值最大相对误差关系的证明，并通过对尺寸分段内按中线值的相对误差的比较，进一步论述了按几何平均值计算公差单位的合理性。

The highest IgE level was observed in the group infected by hookworm, with an arithmetic mean value of 1,298 IU/ml (11.6 times higher than the normal) and a geometric mean of 578 IU/ml (9.2 times that of normal).

IgE值在感染羣（算术平均值：898±1，613IU/ml，几何平均值：447IU/ml显的高於正常对照羣(112±105IU/ml， P.01)， 90%左右的感染学童IgE值高於正常对照羣的平均值，63.3%有明显的升高现象（大於正常对照羣的Mean+2SD）。

The degree of angle θ at different cross-sections of anterior neck were all within the range of 35° to 55°. With the interval of 5 degree as a unit, the mean degree of angle θ is 45°for 9cases, 50°for 2 cases, and 40°for one case.

病人颈部标示区不同截面不θ角度数都落在35至55度之间，若以5度为间隔单位，其中有9例θ角平均值为45度，2例平均值为50度，1例平均值为40度。

Using nuclear DNA C-values for 539 angiosperms in China, we examined the variation of these values among growth forms and taxonomic groups and the relationship of these values with invasiveness. Mean DNA C-value of the 539 angiosperm species was 4.06 pg. Mean DNA C-value was(1) significantly lower for woody species (1.84 pg) than for herbaceous species(5.02 pg);(2) significantly lower for 360 dicots (2.20 pg) than for 179 monocots (7.80 pg);(3) significantly lower for annuals (2.78 pg) than for perennials(6.65 pg);(4) significantly lower for 134 weed species (1.93 pg) than for herbaceous non-weeds (6.75 pg) and for several families that have an unusually high proportion of weed species;(5) significantly lower for 47 exotic weed species (1.76 pg) than for 134 native weeds (1.93 pg), but significantly lower than that of "non-weedy" herbaceous species (6.75 pg);(6) lower for weeds than for "non-weedy" species in same genus or family; and (7) in herbaceous species, generally lower for weedy compared to "non-weedy" species, with some exceptions such as Avena fatua, whose DNA C-value is as high as 14.15 pg, contrarily, and some "non-weedy" herbaceous species in Cruciferae and Cucurbitaceae with very low values.

统计了中国境内有分布的539种被子植物的DNA C-值，分析了它们在不同分类群、生活型、倍性、生活史类型以及在杂草和非杂草类群中的分布情况，主要结果如下：(1)539种被子植物DNA C-值平均为4.06 pg，其中木本植物的DNA C-值平均为1.84 pg，低于草本植物的平均值(5.02 pg)；(2)双子叶植物(360种)的DNA C-值平均为2.20 pg，极明显地小于单子叶植物(179种)的平均值(7.80 pg)；(3)1年生植物的DNA C-值平均为2.78 pg，明显小于多年植物的平均DNA C-值(6.65 pg)；(4)134种杂草的DNA C-值平均为1.93 pg，明显小于非杂草草本植物的平均值(6.75 pg)，含杂草较多的科，平均DNA C-值相对较小；(5)统计的47种入侵杂草的DNA C-值平均为1.76 pg，略小于134种杂草的平均DNA C-值(1.93 pg)，极显著地小于非杂草性草本植物(6.75 pg)；(6)以科为单位，不同科的DNA C-值存在着极大的差异；(7)DNA C-值与染色体倍性的关系并不明显，但是，随着倍性的增加，基因组变小；(8)在同一科、属中，与非杂草相比，典型杂草的DNA C-值往往偏小；(9)总体上杂草或杂草性强的植物，它们的DNA C-值比非杂草性植物的要小。

Based on the artificial neural network model, the sensitivity analysis on each variable of model shows that the effect of ring index of diameter at breast height of Cunninghamia lanceolata on sun-spot is even, and the effects of auto-correlated factors of sun-spot on sun-spot are sensitive, which shows that three variables all have significant effects on sun-spot.

并对网络模型中各变量进行灵敏度分析，分析表明，杉木胸径生长的年轮指数对太阳黑子相对数年平均值影响较平坦，而太阳黑子自相关因子Yt-4和Yt-2对太阳黑子相对数年平均值影响较灵敏，3个因子对太阳黑子相对数年平均值均存在一定的影响。

Using 11 primers filtrated from total 53 primers, ISSR amplification was conducted in 220 individuals from eleven Cryphonectria parasitica subpopulations which were from four countries, and 174 polymorphic loci were detected from total 177 loci. The percentage of polymorphic loci of the total populations was 98.31%, while that at a subpopulation level averaged 20.43 %. Shannon's Information index and Nei's gene diversity of the fungus at the total populations level was 0.1769 and 0.7386, respectively.

自53个ISSR引物中筛选出11个引物，对以上四个群体的栗疫病菌11个子群体的220个菌株进行扩增，共检测到177个位点，其中多态位点为174个，多态位点百分率为98.31%。11个栗疫病菌子群体的P平均值为20.43%；群体水平的Shannon信息指数和Nei指数分别为0.1769和0.7386；各个子群体I的平均值为0.0943，h的平均值为0.0614。

The average contents of phosphrus in alkali feldspars in both comb zone and the first intermediate zone are high, in the range of 0.42-0.22wt%, and gradually increase from 0.21wt% to 0.50wt% as the magma evolves from the third intermediate zone to the core zone. The abnormally low content of phosphrus (＜0.10wt%) in alkali feldspar from the saccharoidal albite zone is considered due to the crystallization of apatites, which gives rise to extreme depletion of phosphrus in residual melt.

阿尔泰3号伟晶岩脉梳状结构带和Ⅰ带的碱性长石具较高P含量(平均值分别为0.42wt％和0.22wt％)，随着岩浆的演化进行，从Ⅲ带到核部带，碱性长石中P含量逐渐增大(平均值由0.21wt％增至0.50wt％)，而Ⅱ带碱性长石中异常低的P含量(平均值为0.08wt％)是该带大量磷灰石矿物饱和结晶，导致残余熔体相中P极度亏损所造成的，而不是晚期出溶的岩浆热液交代形成的。

The IgE levels in other groups, in decreasing order, were 517 IU/ml for ascariasis, 514IU/ml for mixed enterobiasis and hookworm infection, 495 IU/ml for mixed ascariasis and enterobiasis, 450IU/ml for trichuriasis, 336IU/ml for mixed trichuriasis and enterobiasis, and 330 IU/ml for enterobiasis.

所有的感染羣中以钩虫感染羣的IgE值最高，其算术平均值1，298IU/ml，是正常对照羣的11.6倍，几何平均值为578IU/ml，其他感染羣IgE的几何平均值，依值的高低顺序是蛔虫单独(517IU/ml)，钧虫与蛲虫混合(514IU/ml)，蛔虫与蛲虫混合(495IU/ml)，鞭虫单独(450IU/ml)，鞭虫与蛲虫混合(336IU/ml)，蛲虫单独(330IU/ml)等感染羣。

A systematic study on S and/or Pb isotopic compositions of the copper-bearing porphyries, ore minerals and andesite of the deposit shows that S isotopic compositions of ore minerals are similar to those of porphyries.

矿石矿物（208Pb/204Pb=37.917~38.230，平均值38.075；207Pb/204Pb=15.528~15.614，平均值15.571；206Pb/204Pb=17.929~18.082，平均值17.981）与矿化斑岩(208Pb/204Pb=37.832、37.883，207Pb/204Pb=15.529、15.538，206Pb/204Pb=17.906、17.910)以及安山岩(208Pb/204Pb=37.816~37.884，207Pb/204Pb=15.549~15.562，206Pb/204Pb=17.845~17.919)的初始铅组成基本一致，变化范围较小，表明三者具有相同的来源；在铅构造模式图上，所有样品铅同位素均位于造山带演化线上或附近，在铅同位素源区判别图中，均落入造山带和下地壳区域，这表明Pb主要来源于壳幔混合。

As for the energy consumption per door (average is 57.3GJ/d. y), the energy consumption per structure area (average 0.682 GJ/m^2. y) and the energy consumption per man (average 14.438 GJ/man-year) in the country of Jilin province in China, there are few differences for every area, but, a few differences among averages of different areas.

中国吉林省农村的每户能源消费量（平均值为57.3GJ/户年）、单位建筑面积能源消费量（平均值为0.682GJ/平方公尺年）及每人能源消费量（平均值为14.438GJ/1人年），其各调查地区内的差别很小，但不同地区的平均值的差别就很大。

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。