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The method includes steps: digital watermark technique is adopted to hide information of key data in not key data codes of compressed image; under protection of digital watermark, using protective backup for key data detects whether normal transmitted key data is correct or not so as to detect error code; carrying out cyclic mutual backup by using macro blocks in same positions in front and back macro block set; embedding coded motion vector in form of digital watermark to DCT transformation coefficient, and ensuring that video data are not influenced as best as one can; when error code occurs, if key data backup is correct, then the backup replaces former key data; otherwise, using mean value of key data in adjacent macro blocks within same frame to replace former key data approximately.

本发明中，采用数字水印技术在压缩图像的非关键数据编码中隐藏关键数据信息；通过数字水印保护下的关键数据保护备份来检测正常传输的关键数据是否正确，由此来检测传输误码；用前后宏块组中相同位置的宏块进行循环相互备份；对运动向量进行编码，然后以数字水印的形式嵌入到相对不重要的DCT变换系数中，同时保证视频数据尽量不受影响；在误码发生时，如果关键数据备份正确，则直接替代原关键数据，否则用同一帧内相邻宏块的关键数据的平均值近似替代原关键数据。

This occurs in the ascent to 1024-1800 strands of DNA.

这发生在提升到1024-1800股DNA的进程中。

During this stage, which can last for several months or years, asexual reproduction occurs.

在能持续几个月或几年的珊瑚虫阶段中，发生的是无性生殖。

This genetic mutation occurs most often in Jewish women of Ashkenazi descent .

这个基因突变最常发生于犹太妇女的德系血统。

In aspermous Patients the reason is the obstruction of spermatogenesis, the most common obstruction occurs in the spermatid level.

在无精症患者中是由生精阻滞所致，最常见的阻滞发生在精子细胞水平。

Rapeseed stem weevil (Ceuthorrhynchus asper Roel.) is the main rapeseed pest in Northwestern China. It occurs one generation each year with adult overwintering.

油菜茎象甲是中国西北地区油菜的主要害虫，一年发生一代，以成虫越冬。

Real contact between two surfaces occurs only at the asperities, which resulted in the fact that the asperities in real contact carry high load and are prone to elasto-plastic deformation.

摩擦副接触表面的接触只发生在极少数微凸体上，导致这些微凸体承受了较大的载荷，极易产生弹塑性变形。

Asphyxiation occurs when a high level of CO2 causes a deficiency of oxygen, resulting in suffocation.

在高浓度 CO2造成的氧气缺乏的情况下，会引起窒息。

In this paper, a cooperative design approach in a multi-agent design system is introduced and a form of Bulletin Board that supports dynamic task assignation and a kind of conciliatory approach when conflict occurs in design are presented.

介绍了一种多Agent设计系统中的协作方法，提出了支持动态任务分配的公告板机制以及设计过程中的冲突协调方法。

Choosing time delay as the control parameter, the stability of trivial equilibrium is discussed by analyzing distribution of the roots of the associated characteristic equation. It is found that Hopf bifurcation occurs from trivial equilibrium when the delay passes through critical values, then the critical values and their relations with system control parameters are obtained.

以时滞量为参数，通过分析对应线性系统特征方程的根的分布，讨论了平凡解的稳定性，得到了平凡解发生Hopf分岔而失稳的临界时滞量以及临界时滞量与系统控制参数的关系。

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。