变异发生

Firstly, with changing the name from Ryukyu to Okinawa, the timely annexation by Japan in the end of the pre-modem era made "Ryukyuan Consciousness" lose her opportunity to develop into "Ryukyuan Nationalism". Secondly, the thorough Japanization policy carried out through Okinawa at the time restructured the culture and identity of the area.

其一，琉球在进入现代之前，「及时」地为日本所吞并并易名为冲绳，使「琉球意识」失去成长为琉球民族主义的机会；其二，「脱中入日」后的冲绳被彻底地实施面向日本的同化政策，导致其文化结构发生变化，认同也随之发生本质上的变异。

In recent years, there are variances of the operative orientation and functions of the rural credit cooperative union as the result of dramatic changes of the environment and background for the survival and development of rural cooperative finance in China in the past dozens of years as well as the institutional lability of administrative mechanism.

由于中国农村合作金融的生存环境和社会经济背景在近年来发生了巨大的变化，以及农信社管理体制多变的历史原因，使得我国部分农信社的经营方向、宗旨及功能的发挥在很大程度上偏离了合作制原则，发生了变异。

Some researchers proposed that the lack of variation in our maternally inherited mitochondrial DNA suggested these bottlenecks tookplace as our ancestors spread out of Africa relatively recently.

有些科学家提出，我们从母体遗传来的线粒体DNA很少发生变异，说明瓶颈发生在不久以前祖先走出非洲的时候。

An interview guide entitled,"Maternal Perception of the Onset of Lactation" was also used to obtain milk secretion data. The analytical results revealed a mean onset of lactation of 75.7±16.8 hours (range=40 to 117). The prevalence of delayed lactation onset was 50.5%(n=58); 64.3%(n=42) were primiparous, and 41.9%(n=74) were multiparous. Parity, hours of withholding oral intake post-operation, and use of formula were significant predictors of perceived lactation onset. These factors explained 22.5% of perceived lactation onset in postpartum women who planned cesarean section.

研究结果发现：(1)泌乳起始时间的平均值为757±168小时（范围40至117小时）；(2)产妇自觉延迟泌乳的发生机率为500%(n=58)，其中延迟泌乳的初产妇有27位，占所有初产妇(n=42)的64.3%，延迟泌乳的经产妇有31位，占所有经产妇(n=74)的41.9%，经产妇发生延迟泌乳的机率较低；(3)产次、术后禁食时间以及配方乳使用，是泌乳起始时间的重要预测因子，共可解释计画剖腹产妇泌乳起始时间总变异数的22.5%。

Bamboo variation ofmicrodensity of all age-degree and all height bamboo from bamboo green tobamboo yellow as follows:The downtrend ladder of microdensity the firststage from bamboo green to bamboo yellow is relatively large,normally at theplace 0.35 from bamboo hull(the thickness of from bamboo hull to bambooyellow is 1)micro-density downtrend ladder begin to get smaller,variancerange of microdensity is smaller.When reaching near bamboo yellow area,microdensity reaches its minimum value,and when reaching bamboo yellowsection density increase rapidly,the minimum density of bamboo is only 50% orless of maximum density.Bamboo yellow is comprised of stone cells whichhave thick cell wall,so its density is high,normally 50% to 100% more thanminimum density.Bamboo yellow′s lay thickness is thin,normally the samethickness for all age-degree and all height bamboo,about 0.8mm.From 1 age-degree bamboo to 2 age-degree bamboo during growth,the increase of averagedensity is mainly in bamboo pulp section,from 3 age-degree bamboo to 4 age-degree bamboo,the decrease of average density is mainly decrease in the pulpsection.Same age,same height,the less the density ladder of bamboo radialthickness,the higher the mechanical strength.

所有年龄所有高度的竹材微密度从竹青到竹黄对材性变异规律如下：从竹青到竹黄开始下降梯度较大，一般到相对竹皮距离0.35左右处(整个竹壁厚度为1)，竹材微密度下降梯度减小，微密度的变化范围变小，到近竹黄处，微密度达最小值，而后到竹黄部位密度大幅上升，竹材最小密度一般只有最大密度的50％或更低，竹黄由厚壁的石细胞组成，所以密度较大，一般比最小密度增大约50％-100％，厚度较薄，不同年龄不同高度竹材的竹黄厚度相差无几，约在0.8mm左右；竹材从1度竹到2度竹生长过程中，平均密度的增长主要发生在竹肉部分，从3度竹到4度竹生长过程中，平均密度的下降主要发生在竹肉部分，同一年龄同一高度，竹壁厚径向的密度梯度越小，力学强度越高，随着年龄的增大，密度梯度越来越小(1度竹除外)，随着高度增加，密度梯度越来越大。

Since 1997, the goose flocks in some regions of South and East China have experienced severe outbreaks of Newcastle disease virus infection. The results of the in vitro tests indicate that the goose isolates have stronger ability to induce syncytium formation, when compared to chicken and pigeon isolates.

1997年以来我国华南和华东部分地区发生了由新城疫病毒(Newcastle disease virus， NDV)导致的鹅的临诊疾病，而且发现鹅源NDV在体外具有比鸡源和鸽源毒株更强的致细胞融合的能力，这表明NDV的抗原可能发生了变异。

Plant Virology 2 S T. H. Chen, FThe course will give conventional and molecular level of plant viruses in order to help the students to get much theoretical and practical knowledge about plant virology. The contents cover the molecular structure of virion and genome, virus isolation, dentification and purification, transmission, variation,ecology, nomenclature and classification, diagnosis and control.

本课程除传统植物病毒学范畴外，并涵盖从分子层次讨论植物病毒之构造，引起之植物病害，田间发生及防治，期能达到理论与实务并重；内容包括植物病毒分子层次的构造及核酸组成，病毒分离、鉴定与纯化，在寄主体内之增殖及转移，媒介传播、遗传及变异，其引起之病害及田间发生生态与防治。

From the isohyetal maps, we can display the spatial distribution of rainfall caused by typhoons in Nan Shih Creek watershed.

由等雨量线图显示，南势溪集水区台风降雨之分布分别由东向西以及南向北之方向递减；台风降雨中心多发生於福山雨量站所在之区域，降雨量则由福山雨量站向东朝下盆雨量站方向递减；另外，位於本区北端之大桶山雨量所处之区域，则是另一处发生明显降雨空间变化的地区，故台风降雨在南势溪集水区内的分布具有空间变异之特性。

There were interactions between variated genotype and low intake of fresh vegetables, fresh fruits and high drinking of alcohol in cardia cancer group. While the interactions between variated genotype and low intake of pean products, fresh fruits were observed in non-cardia gastric cancer group.

变异基因型与新鲜蔬菜、水果摄入少和常饮酒在贲门癌发生中存在交互作用，与豆制品和新鲜水果低摄入在非贲门部胃癌发生中存在交互作用。

Some people have been asking, has the virus changed, is it mutating or causing more disease.

有些人一直在询问，病毒是否已发生变化？它是否会发生变异或造成更多的疾病？

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。