变化性的

Seismic analysis is one of most important parts of fast breeder reactor core design. It is necessary for structural integrity assessment and analysis of variation of reactivity under the earthquake. Moreover some important data for qualification of the scram capability of the control rods during the earthquake could be provided.

快堆堆芯抗震分析是堆芯设计的重要组成部分，它将为堆芯在地震作用下的结构完整性评价和堆芯反应性变化分析提供必要的数据，同时为控制棒的可插入性评价提供参考。

In view of practical problem during Sulige gas field development, this paper complete follow study content. Study material balance theory of two district compound gas reservoir. Carry out stress sensitivity experiment on matrix rock and labor created fracture core from Sulige gas field with America Core Company high pressure high temperature flow experimental instrument to study stress sensitivity change rule of different permeability matrix rock and created fracture core at the condition of time and again switch on and off well and different drawdown pressure. Carry out depletion experiment on matrix rock of different permeability serial combination with different kinds of allocation, using double core clamper serial connected experimental apparatus, to study gas well production performance of bi-zonal compound low permeability reservoir during low pressure production stage. At the basis of experimental study, establish single well simulation model to analyze development index infection caused by stress sensibility and production performance infection rule caused by inner formation and outer formation of bi-zonal compound gas reservoir permeability variation while considering stress sensitivity.

针对苏里格低渗气田开发中存在的实际问题，完成以下研究内容；研究了两区复合气藏物质平衡原理；利用美国岩芯公司高温高压流动实验仪，对取自苏里格气田基质岩芯和人工造缝岩芯进行应力敏感实验，研究不同渗透率基质岩芯和造缝岩芯在多次开关井和不同生产压差条件下的应力敏感变化规律；采用双岩芯夹持器串联实验装置，对不同渗透率串联组合的基质岩芯进行各种配产条件下的衰竭实验，研究两区复合的低渗储层气井在低压生产阶段的生产动态特征；在实验研究的基础上，建立单井模拟模型分析储层应力敏感性和非均质性对开发指标的影响，研究考虑应力敏感时两区复合气藏储层中内区和外区渗透率变化对开发动态的影响规律。

In particular by the Shanxi and Hebei Road Bangzi Bangzi impact, draws further plate change Bangzi opera singing and Banhu, sanxian musical accompaniment, etc., and gradually create a unique set of system board concert cavity, with the exception of head and, second, and third, the guide plate, referral board, roll white and coloratura singing, but also created a folk system "training transfer" singing.

特别是受到山西北路梆子及河北梆子的影响后，又进一步吸取了梆子腔板式变化的唱腔及板胡、三弦等伴奏乐器，逐步创造出独具特色的成套的板腔式演唱体系，除有头性、二性、三性、导板、介板、滚白及花腔唱法外，还创造了属民歌体系的"训调"唱腔。

Political and military reflexes to match the worldwide impact of the sophistication and deadliness of this assault .

美国的政治和军事反应能力将发生巨大的变化，来应对此次袭击的周密性和致命性所带来的全球性的影响"吻合。C项与文中第17段"

It can decompound omethoate with high efficiency and even survive under 3g/L omethoate. The degradation was related to the trend of the growth of the strain dynamically.

通过对NWB-36有机磷农药降解特性的研究，结果表明，该菌对有机磷农药的降解具有遗传稳定性、广谱性和高效性，可耐受3g/L的氧化乐果，降解呈现动态变化，与菌体的生长趋势呈现一定的相关性。

Exponential dichotomy describes a kind of hyperbolicity of the system. That is, the state space can be decomposed into a direct sum of two subspaces, which are continuous and invariant. And with the time evolving forward, the system is exponentially attracting in one subspace and exponentially expanding in the other subspace.

指数二分性描述了系统的一种双曲性现象：状态空间可以分解成两个连续不变的子空间的直和，随着时间的正向变化，系统在其中一个子空间上表现出指数压缩行为，而在另一个上面表现出指数扩张行为。

According to the discriminability of each cue between target and background, measured by Fisher rule, an adaptive mechanism is presented to update the cue weight. Furthermore, a selective submodel update strategy is utilized to alleviate the model drift.

根据各个特征子模型与当前目标及背景的相似性，提出了一种基于 Fisher 可分性度量的权值自适应更新机制；同时为了克服模型更新过程中的漂移，基于子模型的可分性提出了一种选择性更新策略，实现了在变化场景下的鲁棒跟踪。

The expression level of tim gene in 25LL is markedless higher than 15DD and 20LD in the early incubation stage(7 days before), but it is obviously higher than 20LD and 15DD conditions in the late.To further invesgate the per and tim expression in different moment every day of the sensitive period(7d,8d,9d) during the process of embryogeny,the expression of tim gene was very low and the per and tim expression did not have obvious rhythmicity under 15DD condition.

进一步调查家蚕胚胎对环境敏感时期(7d-9d)per和tim基因的昼夜表达节律，在15DD条件下，tim基因表达量一直很低，tim基因和per基因的表达量都没有明显的节律性变化；而25LL和20LD条件下，两基因在一日中不同时刻的表达具有明显的节律性，表达量也较高。

For Jewishness has no essential meaning, it is a product of ethnical, religious and cultural environments.

他刻画的犹太人物中没有一人能体现出恒稳不变的犹太性，因为对罗斯来说不存在这样的群体身份，犹太性注定是多面多变的，它是民族、宗教、文化等环境所造就的，并随之变化。

We based the development and analysis of heat essence on all kinds of cognitive types and used code system of material corpuscle theory to distinguish, code, classify and order examinate's cognitive types, shown on the quantity and quality data. We also used SPSS statistics software to analyze examinate's cognitive types and their variable frequency distribution and the variation of the different grades.

我们以热本质之各种认知类型的历史发展、分析及物质微粒理论的编码系统为主要参考依据，来识别、编码、分类、排序受测者在施测工具之量性及质性资料中所呈现出来的各种既有的认知类型，并利用SPSS统计套装软体来分析受测者各主要认知类型的频率分布及随年级变化的情形。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。