自限的

As for frame synchronizer, the recognizer of the frame pattern and its performance are analyzed in details. The probability of catching frame pattern upon one pass is deduced. Based on these, the relationship between optimum frame pattern length and the frame length , the allowable error tolerance and the channel errors, the protecting parameter α、βand the threshold level are derived. Consequently, a new type of adaptive frame synchronizer is presented.

对于帧同步器，对帧同步检出及其性能进行了详细分析，推导了帧同步一次通过捕获概率，导出了最佳帧同步码组长度与帧长之间的关系，误差门限与信道误码之间的关系，以及校核帧数α、保护帧数β与误差门限之间的关系，进而提出了一种新颖的自适应帧同步实施方案。

This thesis is composed of two sections in which we discuss generalized spectral density test of conditional autoregressive heteroscedasticity for threshold autoregressive model.

本文分两节对门限自回归模型中自回归条件异方差的广义谱密度检验进行了讨论。

A kind of novel bridge type fault current limiter based on self-turn-off devices for three-phase power systems is proposed.

提出一种基于自关断开关器件的新型桥式短路故障限流器。

The full text of the ordinary user-level and user-level super distinction, rapid sent, unidentified, since the definition of the Forum column, administrators can increase the posting "excellent", the set-top, posting edit, delete the columns and between mobile, users can edit their release and return of postings, administrators can use HTML code maintenance of the database, pages implementation time, the search by title, Enlish Only columns published in English only, background management user SQL code enforcement, and a return to the serial number, user-friendly.

界面简单清爽，全文本，普通用户级及超级用户级别区分，快速发贴、回贴，可自定义论坛栏目，管理员可以对贴子加"精"，置顶，对贴子进行编辑、删除及在栏目间移动，用户可以编辑自己发布及回复的贴子，管理员可以使用HTML代码维护数据库，页面执行时间显示，按标题搜索，Enlish Only栏目仅限发布英文内容，后台管理用户SQL代码执行功能，回复序号显示，方便查看。

Then proposes a video image pre-processing method based on adaptive neighborhood statistics. The proposed pre-processing conquers the low efficiency of classical adaptive neighborhood filter and the sensitivity to threshold in other methods.

提出了一种基于自适应邻域统计的视频图像预处理算法，该算法解决了自适应邻域滤波中邻域构建的效率问题和传统预处理算法的门限敏感问题。

In chapter 7, the 2D-distribution of the clutter spectrum in non-sidelooking phased array airborne radar varies with cell range (this can be often called as clutter range dependence), which this kind of nonhomogeneity resulted by range dependence is more serious especially in short range.

第六章提出了一种基于最大似然估计的动目标检测的非均匀方法，首先利用自回归方法对雷达接收数据进行时域白化处理，然后利用最大似然方法逐距离单元估计目标回波幅度，最后由估计结果与自适应门限比较得到检测结果。

This article expounds the various features of SDT which has been well received by the young people ever since it was introduced into China; including the features of freedom, no restriction in the number of people and short trip time.

本文论述了自驾车旅游传入中国后，被中国的年轻人欣然接受了的种种特点；以及自驾游所拥有的有关于出行自由、人数不限和出行时间短等特点。

The packet error rate and channel estimation are used to compute the adaptive threshold in order to maximize spectral efficiency under given delay and error performance constraints.

该技术结合了传统物理层自适应调制和链路层自动请求重发，利用链路层的误包率和信道估计参数计算自适应调制门限，在系统给定时延和误包率约束的基础上最大程度地提高了频谱利用率。

In the present study, the effects of food restriction on the growth, survival and metamorphosis of Pinctada fucata were investigated from April 27 to May 25 in 2009 under different feeding conditions.

自2009年4月27日至2009年5月25日，在不同投饵条件下研究了限食对合浦珠母贝幼虫生长、成活和变态的影响。

These autoionizing states are classified into five autoionization series in the light of different ionization limits.

根据它们收敛于不同的电离限这些自电离态可以分为5个自电离系列。

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。