strong variation

Avian influenza virus is a high contagious, strong antigenic variation microorganism and with poor resistance force.

禽流感病毒是一种传染性高、抗原变异性强、抗力较弱的微生物，可通过消化道和呼吸道进入人体传染给人。

Precursor Information in Frequency Variation before Strong Earthquake of Guangxi Province History

广西历史强震前地震频度变化的震兆信息

Some features of strong earthquake activity in space and time variation and recent seismically active trend in North China

华北强震时-空变化某些特点与近期强震活动趋势

The Dimension of the Strong and Weak Variation of Generalized Brownian Sheet

广义布朗单的强变差与弱变差的维数

By using the rich historical earthquake data, the author studied some features of temporal and spatial variation of strong seismicity in the Sea of Japan.

利用日本海区丰富的震史资料，研究了该区强震活动时&空变化的某些特征。

Arabian Sea and the eastern tropical Indian Ocean have larger seasonal variation of sea temperature than the others. Because these two sea area are the marine information area of tropical Indian Ocean, and both of them locate in the strong center of air-sea interaction.

阿拉伯海和热带东印度洋的海温季节变化比其他的海区的大，原因是这两个海区是热带印度洋海气相互作用的强中心。

However, the anomalies of moderately strong earthquake ′ s field precursors are short-term, negative ones with obvious amplitude, and show pulse bound, high value rising within short time, step-like change, and the regularity of yearly variation is broken.

而中强震场兆异常，一般表现为幅度明显的短期内的负异常、脉冲突跳、短期内的高值上升、阶变及年变化规律被打破等；

Instability of flow due to complex heat exchange and density variation leads to strong thermal convection in liquid region during the water solidification process. At the end of solidification process, intensity of flow decayed and the stable structure was rebuilt.

因为存在着复杂的热交换和密度变化，水在凝固过程中存在流动结构失稳，使得液相区内发生强烈的热对流.最后流动强度减弱，重新形成稳定结构。

Short-impending deformation tide variation features of strong earthquake source area in Sichuan and Yunnan

川滇强震震源区形变潮汐短临变化特征

A generalized projection of strongly sub-feasible direction method with strong convergence for nonlinear constrained optimization time variation of cosmic ray intensity

非线性约束优化一个强收敛的广义投影强次可行方向法