1. Patients and method:Review the preoperative head CT scanning results owned by 128 children suffering CCHD from January 2007 to April 2008, then pick up 104 chlidren''s preoperative head CT scanning results who were suffering non-Cyanotic congenital heart disease and 77 chlidren''s preoperative head CT scanning results who were non-congenital heart disease as comparison. By the table rank sum test, we can find out if there is significant difference between these three groups; By the Rank sum test and Dunnett''s T3, we can find out if there is significant difference in RBC among these three groups. By the One-way ANOVA analyse and the least significant difference, we can find out if there is significant difference of the parameters such as HB, PCV and PLC among these three groups; By the Kolmogorov-Smimov test, we can find out if there is different ratio of CT results in different types of CCHD. We classify the head CT scanning results into 4 grade, get the intrinsic association through the Box-type diagram in the parameters such as RBC, HB, PCV and PLC. we study the relativity between the CT classificatory changing of CCHD and the parameters such as RBC, HB, PCV and PLC. At last we study their statistical relationship by using Logistic regression theory and make the regression equation. Results:By statistical calculation, P is lower than 0.05 in the group which have the enhancement-alike appearance in head CT scanning, so there is statistical difference.
对象与方法：回顾性分析我院从2007.01～2008.04月间收治的128例术前曾行头颅CT平扫的紫绀型先天性心脏病患儿资料，随机选择同期术前曾行头颅CT平扫检查的非紫绀型先天性心脏病患儿102例，以及非先天性心脏病儿童77例作为对照组，通过列联表秩和检验，研究三组患儿头颅CT改变是否存在差异；通过秩和检验及Dunnett''s T3分析红细胞计数在紫绀型先心患儿与非紫绀型先心患儿、非先心儿童中是否存在差异，通过单因素方差分析及LSD法，分析血红蛋白浓度、红细胞比积和血小板计数在紫绀型先心患儿与非紫绀型先心患儿、非先心儿童中是否存在差异；通过Kolmogorov-Smirnov秩和检验，分析头颅CT类增强样改变在不同类型紫绀型先心中出现的几率是否有统计学差异；通过将头颅CT类增强样改变分为4级，作出红细胞计数、血红蛋白浓度、红细胞比积、血小板计数箱式图，探索其内在关联；进一步通过Logistic回归研究紫绀型先天性心脏病组CT分级改变与红细胞计数、血红蛋白浓度、红细胞比积、血小板计数的相关性。
2. Based on the special decomposition of Hankel matrix, we can transform the problem of approximating a given matrix with a positive semidefinite real Hankel matrix of lower rank to a smooth unconstrained optimization problem.
对矩阵的低秩Hankel半正定矩阵逼近，采用特殊的分解形式，可将其转化为一个无约束的优化问题进行求解，本文应用拟牛顿方法求解无约束优化问题。
3. Makes the chance of an opponent riposting an offhand attack 20% lower per rank.
每一阶可以降低对手反击副手武器攻击机率20%。要求：等级66。
4. Of the reasons why a number of posts requires officers of a lower rank to act up over a long period of time
多个职位需长期由下级人员署任的原因
5. Baidu compares difference in this respect, if if the caption of your webpage does not have the word of the keyword that complete occurrence user searchs, that rank is lower than the webpage of complete occurrence keyword normally.
百度在这方面就比较差，假如你的一篇网页的标题要是没有完整的出现用户搜索的要害词的话，那排名通常都是比完整出现要害词的网页低。
6. Junior: adj.(1) lower in rank or standing
级别地位较低的，较年幼的
7. We still rank lower in trust than many other industries which isn''t good enough if we want to grow beyond mobile.
我们仍然排名较低的信任比其他许多行业是不够的，如果我们想要超越移动。
8. Whether frugal fashions in the upper rank, and comfortableliving in the lower, be not the means to multiply inhabitants?
是否节检的风气就是高尚的，舒适生活就是低下的，意味着不能使人丁昌盛？
9. To lower in rank or grade; demote. See Synonyms at demote
降级：降低等级或衔位；降级参见 demote
10. lower rank的翻译
10. In the numeral value algebra, we can adopt matrix decomposition to solve a problem by transforming the large-scale complicated problem into small-scale simple problems; in the applied statistics, we can get the low rank approximation of the original data matrix through matrix decomposition so as to discover the data`s internal connection. During the machinery`s study and the application of mode identification, the low rank approximation of matrix can largely lower dimensions of the data`s characteristic and conserve the storage and computation resources.
在数值代数中，利用矩阵分解可以将规模较大的复杂问题转化为小规模的简单的问题来求解；在应用统计领域，通过矩阵分解得到原数据矩阵的低秩逼近，从而发现数据的内存接头特征；在机器学习和模式识别的应用中，矩阵的低秩逼近可以大大降低数据特征的维数，节省存储和计算资源。
11. danci.edu.pub
11. Is lower than the minimum rank for his new post, he shall be promotedahead of time to the minimum rank for his new post.
第二十条军官由于职务提升，其军衔低于新任职务等级编制军衔的最低军衔的，提前晋升至新任职务等级编制军衔的最低军衔。
12. Various social strata sports population sex distribution list appears along with the social stratum rank reduces, the sex ratio drops gradually tendency; Lower level sports population age structure deviation old age.
各阶层体育人口性别分布表现出随着阶层等级降低，性别比逐步下降的趋势；下层体育人口的年龄结构偏向老年型。
13. lower rank是什么意思
13. The Basic Study on Liquefaction Property of Lower Rank Coal Swelled with Solvent
年轻煤溶剂溶胀后加氢液化性能的研究
14. The x2 test is lower, and the Spearman rank correlation test is better than Pearson test.
x~2检验呈显著、极显著相关的种对数少于相关分析和秩相关分析，Spearman秩相关分析优于Pearson相关分析。
15. During the main reaction stage, the medium rank coals had higher activation energies, the low and high rank coals had lower activation energies.
在煤样主反应阶段中等煤有较高的活化能，低和高变质煤的活化能低。
16. Q:Describe your comfort level working with people of? higher rank and people of lower rank.
问：描述一下你与地位较高的人及地位较低的人一起工作的融洽程度？？
17. Most of my life, I considered us in the lower middle-class rank Nothing to boast about, but we were mostly content.
大多数时候，我认为我们算是中产阶级的下层，没什么值得炫耀的，但我们总的来说已经很满足了。
18. Based on the theory of combination beam, the formula of nature frequency is deduced for the free RCB. Based on calculus of variation, the approximate formula of lower rank nature frequencies is deduced for the free RCB with local dilapidation of concrete.
对于两端自由健康钢筋混凝土梁，基于组合梁理论，推导了其固有频率的解析计算公式；对于两端自由局部破损钢筋混凝土梁，基于变分法推导了其低阶固有频率的近似解析计算公式；
19. lower rank
19. His military rank is one level lower than mine.
在军衔上，他比我矮一级。
20. lower rank
20. Because the rank measures correlation of the matrix, the lower rank is, the more correlative its column or row is.
由于矩阵的秩能够衡量矩阵中行或者列的相关性，矩阵的行或者列的相关性越强，该矩阵的秩就越低。
1. The bonds rank lower in priority in regard to other bank liabilities in terms of claims on bank assets.
2. I haven''t finished the Analects yet, but I''m pretty sure that clowns rank lower than grandfathers in Confucian hierarchy.