证明了这个模型存在一个严格的正的不变区域，给出该模型的线性化在不变区域内的一些性质。
A strictly positive invariant region was found for this model and some properties of its linearization in this region were presented.
利用不变区域方法，证明了二氧化硫催化氧化管式反应器流向变换强制操作模型整体解的存在性和一致有界性。
The existence and uniform boundedness of the global solutions of the model for sulphur dioxide oxidation in a tubular reactor with periodic flow reversal are proved by the invariant domain method.
在CRUD操作执行之前调用，因此在对象未到达存储区域之前，对象还不是一成不变的，您可以对其进行更改。
Validator, which is called just before the CRUD operation is performed, so that the object is not yet persisted and you have the opportunity to change it before it reaches the storage area.
尽管如此，科学家已经发现HIV表面的一些区域是在所有这些变异体里几乎保持不变的。
Even so, scientists have identified a few areas on HIV's surface that remain nearly constant across all variants.
计算公式为：目标心跳次数区域=220—年龄×（60%〜85%），它并不是一成不变的，可以根据健身者的锻炼目标和身体状况来决定。
The formula for obtaining a target heart rate equals 220 minus your age x 60% - 85%, depending on the individual's fitness goals and physical condition.
在地形等因子不变条件下，四个土壤指标的协同作用决定了区域水蚀过程、形态和危害；
The coordinate effects of four soil indexes strictly determine the regional differences in water erosion process, shapes and harms.
事实上那些不变的区域在进化过程中如此保守，意味着它们担任着重要的角色，一旦改变病毒就会死亡。
The fact that the unchanging regions are so conserved over the course of evolutionary time means that they perform vital roles and that the virus cannot let them change without perishing.
从家系树上可以看出，鼻病毒基因组的某些区域一直在改变而其他区域则不变。
That family tree shows that some regions of the rhinovirus genome are changing all the time but that others never change.
但即使如此，科学家仍然确定了艾滋病病毒表面小部分几乎不变的区域，如名为CD4的结合部位。
Even so, scientists have identified the AIDS virus is still a small part of the nearly constant surface area, such as the binding site, called CD4.
介绍一种用矩不变量跟踪天气雷达回波，以估测回波区域内部流场的方法。
A new moment invariant method was presented to evaluate the flow field within weather radar echo.
采取的主要方法有：1）利用图像中的局部最稳定特征点生成具有几何不变性的局部特征区域；
The main methods include:1) Invariant local feature regions are generated using locally most stable feature points of images;
采取的主要方法有：1）利用图像中的局部最稳定特征点生成具有几何不变性的圆形特征区域，用于水印的同步；
The main methods adopted include:1) watermark synchronization is achieved by invariant local circular regions which can be generated using image locally most stable feature points;
若机组关闭规律不变而拐点位置已经进入反“S”区域，蜗壳进口压力将呈现为单峰形态。
If the changeover point of the above closing law is located in the S-shape effect zone, there is only one pressure peak.
然后利用尺度不变特征变换(SIFT)剔除那些匹配的关键点数目少的子区域。
And Scale Invariant Feature Transform (SIFT) was employed to exclude those sub-regions with smaller matching key points.
焊缝位置和壁厚差异变化时，拼焊管各区域的应力状态保持不变。
Weld-seam position and thickness difference do not affect stress and strain states.
其它区域应力情况和桥梁刚度基本不变。
The stress and stiffness of the other parts are basically unchanged.
方案利用归一化技术将原始图像映射到几何不变空间内，结合不变质心理论提取出归一化图像的重要区域；
The geometrical invariant space is constructed by using image normalization. A significant region is obtained from the normalized image by utilizing the invariant centroid theory.
那个副本区域会保持不变几分钟，玩家可以回到该副本以免此副本重置。
That copy of the instance is left intact for several minutes. Players should return to the instance to make sure it doesn't reset.
而无风险区域在全国范围内呈斑块状散布，分布格局基本保持不变。
Risk- free areas displayed patchy distributions nationwide, and patterns were mostly unchanged.
对场景图像中的显著区域采用梯度方向、二阶不变矩、归一化色调3种特征进行不变性表示，并根据其匹配率实现场景识别。
Those salient regions are represented by 3 invariant features of gradient orientation, moment and canonical hue. They are used for scene recognition in terms of their match ratio.
测试结果显示，该方法能显著减少关键区域的尾气排放量，而车辆行程时间基本保持不变。
The simulation results show a large reduction of emissions in key areas and a basically unchanged travel time.
但是同样的供应链敏捷化过程并没有一个固定不变的公式可以套用，因为不同行业，不同区域的企业必然有着不同的情况。
Because different industries, different regions must have different enterprises inevitable situation, there is not a fixed formula can be applied by agile supply chain process.
本文研究了图像的区域编码和区域逻辑运算，并利用此运算在保持目标轮廓不变的情况下实现了目标区域孔径的填充。
Region encoding and region logical operation were studied. The holes in an object are filled using region encoding and region logical operation with the shape of the object un-changed.
巩固和提升区域中心地位是城市不变的目标，但是城市更应注重区域中心应该具有的责任感和使命感。
It is a long-lasting goal for a city to strengthen and enhance its central area. However, it makes more sense to emphasize the responsibilities and missions this central area to fulfill.
当流量在一定范围内变化时，主流区下方均有漩涡低速区或死水区，该区域的大小与流量有关，其位置基本不变。
There is a whirlpool or dead zone below the main water flow zone when the flow changes and the size of which is related to flow but its location basically unchanged.
使用指定的上下文将指定的值转换为区域性不变的字符串表示形式。
Converts the specified value to a culture-invariant string representation, using the specified context.
根据模型中状态反馈模块和时滞反馈模块的不变性特点，通过构造合适的迭代映射，研究了饱和区域内平衡点的存在性、个数以及局部渐近稳定性。
With the help of FEM numerical simulation method, the performance of cooling towers in terms of stress, displacement and local elastic stability due to aerodynamic loads are examined.
根据模型中状态反馈模块和时滞反馈模块的不变性特点，通过构造合适的迭代映射，研究了饱和区域内平衡点的存在性、个数以及局部渐近稳定性。
With the help of FEM numerical simulation method, the performance of cooling towers in terms of stress, displacement and local elastic stability due to aerodynamic loads are examined.
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