前缀的

Among the twenty nine prefixed studied in this paper, twenty three have aspectual meaning, while the rest do not have.

在本文研究的29个前缀中，23个具有完成体意义，6个不具有体的意义；8个为单义前缀，21个为多义前缀。

Methods in the second group use the cyclic prefix inserted into the OFDM symbol, they do not affect the data rate, but the performance is not agreeable, because the cyclic prefix is contaminated by inter-symbol interference in the multipath channel.

第二大类方法利用了OFDM符号中插入的循环前缀，不影响数据的传输效率，但由于循环前缀受到严重的符号间干扰的影响，这类方法性能不佳。

a scheme of channel estimation using cyclic prefix based on the measurement of the low-voltage power line channel model is presented.after obtaining the frequency response of pilot sub-channel under the state of comb-type pilot,the data sub-channel response is obtained by interpolating the frequency response in frequency direction.in the pilot-free data period,the estimation of the channel is carried out by using cyclic prefix in order to improve the performance of system error rate.

摘 要：通过实际测量给出低压电力线的信道模型，在此基础之上提出了利用循环前缀对信道进行估计的方法，即在梳状导频模式时，使用导频获得导频子信道频率响应后，对其在频域方向进行插值得到数据子信道响应，在其后没有导频的序列的数据周期内，使用循环前缀对信道进行估计，从而起到改善系统误比特性能的目的。

Prefix entries are written to the index block only if the index block does not already contain a prefix entry whose value is equal to the present prefix entry.

应用键压缩后，生成索引时，如果一个键值的前缀在索引块中不存在，此前缀才会被写入索引块中。

And may take an orientation prefix in the perfective situations.

动词前缀nga-和名物化前缀ka-有类似的语意，都有抑制主事者的功能。

Prefixation is the formation of new words by adding prefixes to stems .

前缀法是在词干上加前缀构词的一种方法。

Learn vocabulary for space and space travel;Review reported speech

前缀和后缀都是英语构词的方法，前缀

An infinitive can be the complement of be able to, begin, and like, etc, and it takes no prefixes except ka-. A nominalized verb can be the complement of see, and know, etc.

动词不定式在做为'能'，'开始'，'喜欢'等动词的补语时不接任何前缀，而名物化前缀则可以接趋向前缀表完成体，这构成两者最大的不同。

Prefixes are small groups of letters that you put in front of words to give them different meanings.

学习前缀。前缀是指置于单词前面的字母组合，它们可以表达不同的意义。

Prefixes modify the meaning of the base and therefore are classified according to their meanings.

前缀都会改变词基的意义，因此可以根据其意义划分前缀。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。