查询词典 prevent changes

Improving facial esthetics of our patients is of great importance to orthodontists. An individual's facial appearance is one of their most obvious characteristics and has profound social significance. Tooth movement and proper positioning of the teeth to ensure favorable facial changes and to avoid unfavorable changes should be the goal in the orthodontist's mind.

中文摘要改善患者颜面美观对矫正医师是很重要的工作，颜面外观是一个人最重要的特质之ㄧ，而且会影响社会人际关系，在矫正医师的观念中必须理解到除了牙齿的移动及适当的排列外，还要注意任何齿列的改变是否会引起不理想的颜面外观改变。

HN strain,which was isolated from diseased chick ens with respiratory symptom and proventriculus changes,has stably passed in chi cken embryos and caused the chicken embryos regular death and typical pathologic al changes.

HN毒株为从我省某鸡场患有呼吸道症状和腺胃病变的病鸡中分离到的一株病毒，在鸡胚中能稳定传代并具有规律性死亡和典型胚胎病变特征。

For example, the DSM diagnostic changes emphasize symptom checklist approaches to psychiatric diagnosis; neuroscience and psychopharmacology gains emphasize somatic interventions; delivery system changes, and inadequate availability of psychiatrists, diminish attention to the psychological aspects of the patient's presentation and treatment.

举例说，DSM诊断的变化强调用症状量表来作精神科诊断；神经科学和精神药理的发展强调了躯体的干预；传递系统的变化，以及不充足的精神科医生，使得对病人表现以及治疗的心理侧面的重视减少。

Amino to acetyl phenol, in have technology of two kinds of production domestic and internationally, acetic anhydride craft of the United States, acyl changes temperature to have 75 ℃ only, acyl changes mother liquor not apply mechanically, deputy reaction is little, of production thick tasting is kind of white almost, purificatory craft is very simple, activated carbon dosage only 2~3%, the Kun that its product does not have glow material almost in different third alcohol inferior the sealed impurity of amine impurity and minim, settleclear lightness it may not be a bad idea, the product quality that acetic anhydride craft produces is good, but close rate low, cost is high.

对乙酰氨基酚，在国内外有两种生产工艺，美国的醋酐工艺，酰化温度只有75℃，酰化母液不套用，副反应少，生产的粗品几乎是类白色，精制工艺就非常简单，活性炭用量仅2~3%，其产品在异丙醇中几乎无红光物质的醌亚胺杂质及微量的未知杂质，澄明度也好，醋酐工艺生产的产品质量好，但收率低、成本高。

It was found that the substituent leads to thestructural changes of quinone,and then results in the charge distribution and dipolemoment changes.

研究结果表明，取代基导致醌的结构发生扭曲，并由此导致了电荷分布和偶极矩的变化。

The induced changes in log mesopic contrast sensitivity showed significant negative correlation with the changes in third-order (r =-0.490, P =.0013 without glare; r =-0.362, P =.0177 with glare; Spearman rank correlation coefficient) and fourth-order root mean square (r =-0.586, P =.0001 and r =-0.306, P =.0450, respectively).

中间视力对比敏感度log值的变化与三阶像差(r =-0.490， P =。0013 无眩光； r =-0.362， P =。0177 ，有眩光； Spearman 等级相关系数)和四阶像差(r =-0.586， P =。0001无眩光；； r =-0.306， P =。0450有眩光，)的均方根呈显著负相关。

As a result of which contains both caused by changes in the history of the interpretation of the values and criteria for judging the changes also include re-release of this interpretation and the history of inherent contradictions and conflicts implied a possible interpretation of the opportunity or sexual.

其中既包含有因历史的变动而引起的阐释的价值取向和判断标准的变化，也包含有这种阐释和重释活动的历史本身存在的矛盾和冲突所隐含的一种阐释的契机或可能性。

From the point of view of the whole process of literary activities, network literature has the space to perfect literariness: first, from the reader's level, reading changes into exchanges, and literariness is no longer the invention of the writer, but an art accomplished through the exchanges between the writer and the reader; second, from life's level, aesthetics changes into consumption.

网络文学已经为文学活动的实践提供了成功范例，从文学活动的全过程看，都具有完善文学性的空间：一是在读者层面，从阅读转化为交互；文学性不再是作家个人的发明创造，而是由作者与读者通过交互共同完成的艺术品。

Value is the product of the relationship of demand and supply between subjects and objects Subjects consist of three levels such as human totality,groups subjecting to the human totality,and human individuals Coresponding to it,objects include the outside world with respect to human totality（groups+individuals+the world outside human being）,the outside world with respect to human groups,and the outside world with respect to human individuals Therefore,things possess value,so do human beings Because humans themselves are the unity of subjects and objects,humans have selfvalue The reciprocal function of the factors constituting value decides the production of value,promote the changes of value,which is the basic subject of thelaw of value The three factors which have influence on the changes in value are the demand of subjects.the character of objects.and practice The origin of the conflicts of value concepts lies in the differences and opposites of the living conditions of human subjects The direct originis the differences and opposites of value objects Therefore,in order to gradually eliminate the conflicts of human value concepts,the differences of the living conditions of human subjects must be eliminated thoroughly

价值是主客体之间需要与满足关系的产物。主体有人类整体、人类整体之下的群体以及人类个体三个层次，与之相应，客体也包括与人类整体相对的外部世界（群体+个体+人以外的世界）、与人类群体相对的外部世界以及与人类个体相对的外部世界。因而不仅物具有价值，人亦有价值。由于人自身是主客体的统一，因而人还有自我价值。构成价值的各个要素相互作用决定价值的生成、推动价值的变化，这是价值规律的基本内容。影响价值变化的主要有主体需要、客体属性及实践三个要素。价值观念冲突的最终根源在于人类主体生存条件之差别和对立，直接根源则在于价值客体的差别和对立。因而要逐步消除人类价值观念的冲突就必须从根本上消除人类主体生存条件方面的差别做起。

Based on the TM images of 1985 and 2000, the paper analyzed changes in land use of the Minjiang Watershed and reciprocal transformation of land use between types quantitatively with the aid of GIS. Spatial differences in the changes of land use and their driving forces between two cities, Jianyang and Changle, were also discussed.

本文采用福建省1985年和2000年两期TM卫星遥感解译数据，在GIS软件支持下，定量分析闽江流域土地利用变化总体态势以及各种土地利用类型间的相互转化状况，并以建阳市和长乐市为例，分析了流域上下游县域土地利用变化的差异及其驱动力。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。