不稳定性

An experimental investigationon transient of wall temperature in start up process of pool boiling heat transfer innarrow annuli under atmospheric pressure was carried out.

对常压下竖直环隙流道内沸腾换热启动阶段壁温的瞬态变化特性和流动不稳定性进行了实验研究。

The seismic data between the wells are inversed on the base, and deduce the lithology variation of coal-bearing stratum.

谱分解技术是利用薄层调谐体离散频率特性，通过分析复杂岩层内陷频谱变化和局部相位的不稳定性，识别薄地层横向分布特征。

The flow considered is a combination of plane Poiseuille flow with a flow oscillating periodically and its instability is found for a spedal initial value of a developing wave due to continuous oscillating source.

本文研究平面Poiseuille流与其垂向振荡流的组合流动系统。对于连续振荡源导致的波包演化，该系统存在不稳定性。

Because of the asymmetry of the inlet structure and the unstable characteristics of the swirl flow,the spinning center of the gas flow deviated from the geometrical center of the cyclone,which resulted in the asymmetry of the flow field and the change of the three dimensional velocity components.

蜗壳式旋风分离器入口结构的非轴对称以及气相旋流的不稳定性造成了气流的旋转中心与旋风分离器的几何中心不重合，从而导致了气相流场三维速度的非轴对称分布以及速度分量由于基准不同而产生的大小和方向变化。

Rayleigh-Taylor instability ; single point diamond turning ; modulation target ; inertial confinement fusion

Rayleigh-Taylor不稳定性；单点金刚石切削；调制靶；惯性约束聚变

The changes in targets may decrease the effect of NTX insecticide; SI04 sequence has relationship with the propagation of diamondback moth.

它们的改变可能会影响到沙蚕毒素的作用效果；S104序列则可能与小菜蛾的生殖方面相关，目前认为抗药性的不稳定性与抗性小菜蛾的繁殖率降低有关。

A retrieval method based on multiple sub-clustering centroids with relevance feedback The performance of relevance feedback technique in image retrieval is not stable in many settings, and more feedback information does not ensure more improving in effectiveness.

由于图像内在的复杂性，唯一的全局检索点通常难以准确覆盖用户的检索目标，使得反馈对检索效果的改进表现出不稳定性。

They have a basic consistent view with the chromatology.But their artistic synesthesiare ability is in the preliminary or evolutive stage. The children's artistic synesthesiare from clour is blurry, unstable and instant. It has four reasons which are association , intuition, clours' brightness and children's tastes.

但这种能力处于初期或发展阶段，并且儿童艺术通感具有一定的模糊性、不稳定性和即时性的特点；儿童由色彩产生艺术通感的原因有四种：联想、直觉、色彩明度、个人喜好。

In this article,we report a study on the duplex stability affected by mismatches and insertions.The effects of the chemical nature,the positions,the numbers,and the cooperative behavior of mismatches as well as insertions on the 20-mer and 30-mer duplexes were examined.

在本实验中，我们系统地研究了20-mer和30-mer的杂交双链中错配与插入碱基的化学性质，位置，数目及协同效应对杂交双链稳定性的影响，总结了相关的稳定性趋势；应用温度梯度PCR实验来验证错配双链的不稳定性。

The effed Of three-dimensional perturbed velocities and three-dimensional perturbed current densities on the beam-wave interaction of plasma-filled dielectric Cherenkov maser is analysed by use of the self-consistent linear field theory without considering the effect Of the longitudinal guided magnetic field.The dispersion relation and the Simultaneous condition of the beam-wave interaction are derived. It is clearly shown that the instability of the interaction results from the coupling of the TM mode in t...

在无引导磁场的作用下，利用自洽线性场理论，分析了电子的三维扰动速度和三维扰动电流密度对填充等离子体的介质切伦可夫脉塞注波互作用的影响，导出了注波互作用的色散关系和同步条件，所得关系清楚地表明，其工作用不稳定性是由填充等离子体的介质筒慢波波导中的TM模与电子注模通过电子注耦合所致，并求得了电子注引起的频偏和波的增长率。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。