变异系数

After orthostatic maneuver, the coefficient of component variance for Low-frequency component increased in healthy control subjects and patients with hypertension, decreased in hypertensive patients with SAS.

对于各频谱段变异系数在调整血压因素后协方差结果显示，与正常对照组相比，休息时SAS合并高血压组总频谱变异系数明显下降(p＜0.05)，高频段变异系数各组间无差别，与正常对照组和单纯高血压组相比，低频段变异系数明显增加(p＜0.01，p＜0.01)。

At cypsela size variation, the cypsela length variations of Ajania, Senecio and Anaphalis are smaller, the cypsela length variations of Artemisia, Aster and Ligularia are bigger; the cypsela width variation of Anaphalis is smaller, and others have little difference.

在连萼瘦果大小变异方面，亚菊属、千里光属和香青属连萼瘦果长度的变异系数较小，蒿属、紫菀属和橐吾属的变异系数较大；香青属连萼瘦果宽度的变异系数较小，其他属的变异系数相差不大。

In the process of moving from single-sustenance to double- sustenance, the angel of body tends to enlarge; in the process of moving from double-sustenance to single-sustenance, the angle of body tends to decrease; when the right leg is kicking on the ice, the center of gravity is just moved to the upper point of fulcrum, which means the center of gravity is vertical to fulcrum, while the left leg starts to kick on the ice when center of gravity completely surpass fulcrum; right knife touches the front ice of the supporting foot, the left knife touches the interior and front ice; small momentum variation coefficient and good effect of momentum move show the rationality of action and abundance of

单支撑阶段向双支撑阶段过渡过程中，躯干角度有增大趋势；右双支撑阶段向单支撑阶段过渡过程中，躯干角度有下降趋势；右腿蹬冰时重心刚好前移至支点的正上方，即重心与支点相垂直，而左腿则是在重心完全超越支点后一段时间才开始的蹬冰；右刀着冰向支撑脚前方下刀，左刀着冰向内侧前方跨出；动量变异系数小，动量转移效果好，反映了动作结构的合理性和能量利用的充分性；目前世界优秀运动员各环节的动量分配比例较以前均有较大幅度的提高；环节动量变异系数遵循着大环节动量变异系数小、小环节动量变异系数大的原则是较合理的。

Chromic trioxide and chromium hemitrioxide are determined with iodometry, the coefficient of variation of chromic trioxide is 0.056%, and the recovery of marked compound is 99.82-99.83%; the coefficient of variation of chromium hemitrioxide is 1.45%,and the recovery of marked compound is 98.55-99.26%; iron is determined by complexometric titration, the coefficient of variation of iron is 1.73%, and the recovery of marked compound is 99.12-99.23%;sulfate is determined by complexometric titration, the coefficient of variation of sulphate is 0.16%, and the recovery of marked compound is

Analysis Of The Chromium Electroplating Wastewater By Oxidation-reduction And Complexometric Titration-化学工程与工艺-本文采用氧化还原滴定法与络合滴定法对镀六价铬的废水中铬酸酐，三氧化二铬，铁和硫酸根的含量进行了测定：铬酸酐和三氧化二铬用碘量法测定，铬酸酐的变异系数为0.056%，加标回收率为99.82-99.83%，三氧化二铬的变异系数为1.45%，加标回收率为98.55-99.26%；铁用络合滴定法测定，其变异系数为1.73%，加标回收率为99.12-99.23%；硫酸根用络合返滴定法测定，其变异系数为0.16%，加标回收率为

As investigated, the shape of the fruit was mainly rotundity, and the color of the fruit were red, black, yellow, mauve. Variation coefficient of mineral elements, which revealed wider variation range and rich genetic diversity. Among them, Fe, the content and the variation coefficient of which was the highest(2.12 mg·100g-1 and 26.99％), it has large potential for futher selection. Ripe fruit of 12 wild myrobalan plum seedlings were analyzed using head space-solid phase microextraction and gas chromatography-mass spectrometry. The results showed considerable genetic variations in these aspects: The total content of volatile components, the classes and contents of each compounds classes, the segregation ratio, and content of main components. There were 83 compounds in total belonging to 6 classes detected in 12 wild myrobalan plum seedlings, including esters, alcohols, ketones, aldehydes, heterocycle and Hydrocarbons. Among them, Formic acid, hexyl ester, the content of which was the highest(4.33 μg·g-1),was important character impact odors.

结果表明，①新疆野生樱桃李实生株系的果实形状主要为圆形，少数为椭圆形、卵圆形、卵形和宽卵形，果实颜色有黄色、红色、紫红色和黑色等4种类型，野生樱桃李果实纵径、横径、单果重、果形指数以及可溶性固形物含量均存在一定程度的变异，遗传多样性较为丰富，其中以单果重的变异系数最大(9.13 %)；②新疆野生樱桃李实生株系果肉组织的Zn、Ca、Mg、Mn、Fe及Cu等6种矿质元素含量变异丰富，其中以Fe元素的含量（平均值为2.12 mg·100g-1）和变异系数（26.99％）最高，进一步筛选高铁性状单株的潜力很大；③从新疆野生樱桃李12个实生株系中共鉴定出醇类、醛类、酯类、酮类、烃类及杂环类等6类83种挥发性化合物，各实生株系挥发性化合物总含量、挥发性化合物种类及其含量以及主要挥发性化合物分离比率与含量等存在广泛的遗传变异，遗传多样性较为丰富，其中以甲酸己酯含量最高（平均值为4.33 μg·g-1），是野生樱桃李果实香气形成的重要特征性化合物。

Study shows that,pH smallest coefficient of variation was 12.95%,coefficient of variation of soil available phosphorus was the largest,varia...

研究表明，pH的变异系数最小为12.95%，土壤有效磷的变异系数最大，变异值达到了122.18%；经克里金插值分析，研究区土壤养分的空间相关性减弱，朝均一化发展，这说明了红花套镇土地养分变化受人为因素影响较大，当地的土壤适合并已形成大面积的发展种养殖业，传统的稻、麦、棉种植数量和产量都与红花套镇的人平纯收负相关，对当地人平纯收贡献最大的是柑桔总产，相关系数分别为0.822，0.966，土地利用效率最大的是水产品养殖，相关系数分别为-0.760，0.870。

The order spatial variation of soil surface compaction was in the land reclaimed five years(68.40%), next was unsubsided land(52.58%) and the lowest was the land being reclaimed(22.01%); in terms of the variation, the soil compaction is higher and the variation is lower to each soil layer of being reclaimed land, and the compaction of the first three layer is lower but the variation is higher to other redamed land, to the fourth layer(22.86～30.48 cm) is higher and variation is lower, and the compaction under the forth layer is nearly stable.

表层土壤压实度空间变异最大的是复垦5 a的土地（变异系数为68.40%），其次是未塌陷土地（52.58%），最小的是正在复垦的土地（22.01%）。从各层的变异情况看，正在复垦的土地各个层次土壤压实度都较大且变异系数较低，其他复垦年限土壤压实度上面3层较小但变异大，至第4层（22.86～30.48 cm）达到较高值，且变异较小，之下压实度基本稳定。

The variation coefficients of most traits are greater in half-sib families than that in clones except for several branch traits.The average height of clones is nearly two meters higher than that of half-sib families, and the average volume of clones is 1.16 times about that of half-brethren families.

除枝下高、侧枝粗、分枝角、冠幅等几个分枝性状在无性系间的变异系数大于在半同胞家系间的变异系数外，其余性状均小于在半同胞家系间的变异系数。20个无性系的总平均树高、胸径和材积高于18个半同胞家系的平均值，其中，树高和材积显然高于半同胞家系的树高和材积，平均树高高出近2米，平均材积高出16.1%。

The content of different nutrient was variated in:change of soil organic matter in the rate of 6.32～35.83 g/kg,the coefficient variation was 29.72%,change of the soil available nutrient content was not the same,to the most obvious avail-P,the rate of change for the 4.00 to 91.60 mg/kg,the coefficient variation 68.81%,avail-N smaller the range, changes in the rate of 40～182 mg/kg,the coefficient of variation was 26.66%.The average of all soil nutrients are in the middle level of the plentiful-lack Index of available nutrient.

涿州市不同元素养分含量变异情况各不相同：土壤有机质变幅不大，变化幅度为6.32～35.83g/kg，变异系数为29.72%；土壤速效养分含量变幅不相同，以速效磷最为明显，变化幅度为4.00～91.60mg/kg，变异系数达68.81%；碱解氮的变幅较小，变化幅度为40～182mg/kg，变异系数达26.66%，各速效养分的平均值均在丰缺指标所划定的中等养分含量水平。

But significant differences were found in coefficient of variation and broad-sense heritability (H2) of the three characters: CV and H2 of self-pollinated fruiting rate were both greatest, with the variation mainly resulted from inheritance, and high inheritance potential; H2 of fertile flower rate was the least and its variation was less from inheritance; CV of average fruit weight was the least and its inheritance potential is small. Thirdly, the ratios of sweet to bitter kernel of F1 progenies in positive and reverse crosses between Katy and Taianshuixing were 18∶16 and 13∶12, and were both in agreement with a 1∶1 segregation by χ2 test, which demonstrated that the bitter kernel character of Katy was heterozygous.

但3个性状的变异系数和广义遗传力(H2)均差异很大，其中自交坐果率的变异系数(101.5%～139.1%)和广义遗传力(87.1%～91.4%)均较大，表明变异主要来自遗传效应，并且自交坐果率的遗传潜能大；有效花比率的广义遗传力最小(36.8%～49.1%)，表明其遗传效应较小；平均单果重的变异系数最小(24.0%～29.7%)，说明平均单果重的遗传潜能小；（3）凯特与泰安水杏正反交的杂种一代甜仁与苦仁的比例分别为18∶16和13∶12，经χ2检验符合1∶1的分离比例，证明控制凯特杏甜仁与苦仁这对性状的基因位点是杂合的。

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。