结构退化

SIMOX结构退化的卢瑟福背散射研究

Study on degeneration of SIMOX structure by Rutherford backscattering spectrum

景观结构退化即景观破碎化，是指景观中各生态系统之间的各种功能联系断裂或连接度（connectivity）减少的现象；

Landscape structure degradation , that is landscape fragmentation , is defined as the phenomenon that functional diversity relationships are ruptured or connectivity is reduced among ecosystems within the landscape .

90年代后期更出现了产业结构退化现象。

In the late 1990s , the industrial structure even degenerated .

混凝土结构退化模型与耐久性评估

The Models of Deterioration and Durability Evaluation of Reinforced Concrete Structure

将网络参数作为实数编码基因进行遗传选择，参数个体的受损率超过退化阈值时发生结构退化。退化进程由协同进化的控制个体动态控制。

Parameters are coded as gene co-evolving with control gene that controls degeneration .

中国西部地区的环境&贫困与产业结构退化

Environment v.s Poverty Combining with the Degradation of Industrial Structure in Western China

基于案例推理的斜拉桥结构退化预测模型研究

Study on Case-based Reasoning Modeling for Predicting the Deterioration of Large Scale Cable-stayed Bridge

景观的恢复与重建是针对景观退化而言，景观退化从表现形式上可分为景观结构退化与景观功能退化。

Landscape restoration and rehabilitation have become important due to widespread landscape degradation , including structure and function degradation .

圆锥角膜是一种角膜的结构退化，病发时患者角膜由正常情况下的圆形逐渐鼓胀成圆锥形。

Keratoconus is a deterioration of the structure of the cornea with gradual bulging from the normal shape to a cone shape .

结果表明，与地带性自然植被下丘陵湿润铁铝土比较，次生植被或人工植被下丘陵湿润铁铝土结构退化现象明显。

Results showed that compared with the soil under zonal natural vegetation it suffered more structure degradation under secondary or man-made vegetation .

环1磷酰胺通过明显抑制骨形成而导致骨量减少，骨显微结构退化等典型骨质疏松特征的出现。

Cyclophosphamide causes osteopenia and microstructure degradation in rats , which are the typical feature of osteoporosis , by significantly inhibiting bone formation .

针对一般大气环境下钢筋混凝土结构退化的特点，指出由混凝土碳化引起的钢筋锈蚀是桥梁结构退化的主要因素。

As a result of carbonization of Concrete , Corrosion of reinforcement is the major factor of structure deterioration in common atmosphere environment .

结论去负荷导致骨显微结构退化，骨局部因子含量改变，骨强度和骨量减少。

Conclusion Hindlimb unloading may lead to regression of bone microstructure , change of bone local growth factor content , reduction of bone biomechanical properties and bone content .

目的：骨质疏松症是以骨量减少、骨组织显微结构退化为特征，以至骨的脆性增高及骨折危险性增加的一种全身性骨病。

Objective : Osteoporosis is characterized by a decrease in bone mass as well as a deterioration of the bone architecture resulting in an increased risk of fracture .

以上变化表明，产软壳蛋鸡壳腺部粘膜上皮细胞结构退化，功能降低。

It was concluded that the functions of the shell gland mucosa columnar epithelial cells of SSE-laying hens became degenerative , thus effecting the formation of the egg-shells .

在加载过程中，以结构退化成机构为分析终止点，从一定程度上表现构件重要性与整个结构鲁棒性之间的关系；

The loading process is completed until the structure becomes a mechanism , to some extent , which helps to establish the relationship between component importance and structural robustness .

主要研究结果如下。不同处理都能降低坡地水蚀，阻止土壤结构退化，能有效缓解红壤季节性干旱。

The main findings are as follows : Different processing all can reduce slope erosion , prevent degradation of the soil structure , and mitigate the seasonal drought of red soil effectively .

西宁市南川水源地水质恶化机制本文从钢筋混凝土结构退化的机理出发，在总结前人成果的基础上，研究钢筋混凝土梁桥的退化预测和退化结构承载能力评估的方法。

Based on above point , the thesis analyzes methods of deterioration prediction and carrying capacity assessment for reinforced concrete beam bridges on the basis of current research and mechanism of deterioration of reinforced concrete structure .

作为示例，数值计算了感性双侧膜片窗口，当结构退化成感性纯金属窗口时，数值结果与文献[1]趋于一致。

As an example , an inductive bilateral septa window is computed . When the configuration is degenerated into an inductive all metal window with zero thickness , the numerical results are in good agreement with the available data in Literature [ 1 ] .

传统Newmark法不考虑结构面退化，计算结果一般过低的估计了边坡地震永久位移量值，它较为适合估计地震永久位移量值较小的边坡。

The result reached by traditional Newmark method was too small in general . Traditional Newmark method was only suitable to evaluate the rock mass slope with small permanent displacement during earthquake .

近几年由于钢筋锈蚀所导致的桥梁面板结构功能退化的问题变得日益严重，而采用玻璃纤维增强复合材料（GFRP）代替钢筋被证实为一种有效解决途径。

In recent years , deterioration of reinforced concrete bridge deck slabs caused by corrosion of reinforcement has become increasingly evident . Glass Fiber-Reinforced Polymers ( GFRP ) is developing to be promising alternative reinforcement construction materials as an effective solution of corrosion problems .

拟协调九结点四边形层合板壳有限元用于复合材料板、壳结构的退化的等参壳元

A Quasi-Conforming Nine-Node Quadrilateral Finite Element for Multi-Layered Composite Plates and Shells

氯离子侵蚀盾构隧道衬砌结构性能退化试验

Tests on Structure Behavior 's Degradation of Shield Tunnel Lining in Chloride Erosion

结果在传代过程中，细胞结构逐渐退化。

Results In the course of passage , the cellular structures degenerated gradually .

考虑结构面退化的岩质边坡地震永久位移研究

Evaluation of the permanent displacement of rock mass slope considering deterioration of slide surface during earthquake

通电锈蚀钢筋砼梁结构性能退化的试验研究

Experiment Research on Structural Function Deterioration of Reinforced Concrete Beams by Using " Galvanostatic Method "

人类的衰老与性腺结构的退化有密切关系。

There is close relationship between human ageing and the structural degeneration of the sex glands .

骨矿密度的降低与骨微结构的退化都会导致骨强度的下降，从而引发骨质疏松。

Osteoporosis is characterized by low bone strength , which results from both low bone mass and deteriorated bone microstructure .

本实验结果表明，土壤线虫群落结构对退化沙漠生态系统的恢复阶段具有很好的生物指示作用。

It was suggested that the change of nematode community composition was indicative of the restoration of the desert ecosystem .

在返白系小麦叶色由绿变白的过程中，叶绿体结构发生退化。

The changes took place in the chloroplast structural degeneration in the course of the mutant leaf color turning from green to white .